diff --git a/classes/feeds.php b/classes/feeds.php
index 1e62a9206..3c6c20f26 100755
--- a/classes/feeds.php
+++ b/classes/feeds.php
@@ -51,7 +51,7 @@ class Feeds extends Handler_Protected {
 		$reply .= "<span class='r'>
 			<a href=\"#\"
 				title=\"".__("Show as feed")."\"
-				onclick=\"Utils.displayDlg('".__("Show as feed")."','generatedFeed', '$feed_id:$is_cat:$rss_link')\">
+				onclick=\"App.displayDlg('".__("Show as feed")."','generatedFeed', '$feed_id:$is_cat:$rss_link')\">
 				<img class=\"noborder\" src=\"images/pub_set.png\"></a>";
 
 
@@ -137,7 +137,7 @@ class Feeds extends Handler_Protected {
 
 		//$reply .= "<option value=\"catchupPage()\">".__('Mark as read')."</option>";
 
-		$reply .= "<option value=\"Utils.displayDlg('".__("Show as feed")."','generatedFeed', '$feed_id:$is_cat:$rss_link')\">".
+		$reply .= "<option value=\"App.displayDlg('".__("Show as feed")."','generatedFeed', '$feed_id:$is_cat:$rss_link')\">".
             __('Show as feed')."</option>";
 
 		$reply .= "</select>";
diff --git a/classes/pref/feeds.php b/classes/pref/feeds.php
index 82cb84daf..961a09c28 100755
--- a/classes/pref/feeds.php
+++ b/classes/pref/feeds.php
@@ -1306,7 +1306,7 @@ class Pref_Feeds extends Handler_Protected {
 
 		print_warning("Published OPML does not include your Tiny Tiny RSS settings, feeds that require authentication or feeds hidden from Popular feeds.");
 
-		print "<button dojoType=\"dijit.form.Button\" onclick=\"return Utils.displayDlg('".__("Public OPML URL")."','pubOPMLUrl')\">".
+		print "<button dojoType=\"dijit.form.Button\" onclick=\"return App.displayDlg('".__("Public OPML URL")."','pubOPMLUrl')\">".
 			__('Display published OPML URL')."</button> ";
 
 		PluginHost::getInstance()->run_hooks(PluginHost::HOOK_PREFS_TAB_SECTION,
@@ -1323,7 +1323,7 @@ class Pref_Feeds extends Handler_Protected {
 
 		print "<p>";
 
-		print "<button dojoType=\"dijit.form.Button\" onclick=\"return Utils.displayDlg('".__("Show as feed")."','generatedFeed', '$rss_url')\">".
+		print "<button dojoType=\"dijit.form.Button\" onclick=\"return App.displayDlg('".__("Show as feed")."','generatedFeed', '$rss_url')\">".
 			__('Display URL')."</button> ";
 
 		print "<button class=\"btn-danger\" dojoType=\"dijit.form.Button\" onclick=\"return Prefs.clearFeedAccessKeys()\">".
diff --git a/js/AppBase.js b/js/AppBase.js
index 8987d115e..1721f0905 100644
--- a/js/AppBase.js
+++ b/js/AppBase.js
@@ -3,6 +3,10 @@
 define(["dojo/_base/declare"], function (declare) {
 	return declare("fox.AppBase", null, {
 		_initParams: [],
+		_rpc_seq: 0,
+		hotkey_prefix: 0,
+		hotkey_prefix_pressed: false,
+		hotkey_prefix_timeout: 0,
 		getInitParam: function(k) {
 			return this._initParams[k];
 		},
@@ -30,6 +34,325 @@ define(["dojo/_base/declare"], function (declare) {
 					return callOriginal(options);
 				}
 			);
-		}
+		},
+		urlParam: function(param) {
+			return String(window.location.href).parseQuery()[param];
+		},
+		next_seq: function() {
+			this._rpc_seq += 1;
+			return this._rpc_seq;
+		},
+		get_seq: function() {
+			return this._rpc_seq;
+		},
+		setLoadingProgress: function(p) {
+			loading_progress += p;
+
+			if (dijit.byId("loading_bar"))
+				dijit.byId("loading_bar").update({progress: loading_progress});
+
+			if (loading_progress >= 90)
+				Element.hide("overlay");
+
+		},
+		keyeventToAction: function(event) {
+
+			const hotkeys_map = App.getInitParam("hotkeys");
+			const keycode = event.which;
+			const keychar = String.fromCharCode(keycode).toLowerCase();
+
+			if (keycode == 27) { // escape and drop prefix
+				this.hotkey_prefix = false;
+			}
+
+			if (keycode == 16 || keycode == 17) return; // ignore lone shift / ctrl
+
+			if (!this.hotkey_prefix && hotkeys_map[0].indexOf(keychar) != -1) {
+
+				this.hotkey_prefix = keychar;
+				$("cmdline").innerHTML = keychar;
+				Element.show("cmdline");
+
+				window.clearTimeout(this.hotkey_prefix_timeout);
+				this.hotkey_prefix_timeout = window.setTimeout(() => {
+					this.hotkey_prefix = false;
+					Element.hide("cmdline");
+				}, 3 * 1000);
+
+				event.stopPropagation();
+
+				return false;
+			}
+
+			Element.hide("cmdline");
+
+			let hotkey_name = keychar.search(/[a-zA-Z0-9]/) != -1 ? keychar : "(" + keycode + ")";
+
+			// ensure ^*char notation
+			if (event.shiftKey) hotkey_name = "*" + hotkey_name;
+			if (event.ctrlKey) hotkey_name = "^" + hotkey_name;
+			if (event.altKey) hotkey_name = "+" + hotkey_name;
+			if (event.metaKey) hotkey_name = "%" + hotkey_name;
+
+			const hotkey_full = this.hotkey_prefix ? this.hotkey_prefix + " " + hotkey_name : hotkey_name;
+			this.hotkey_prefix = false;
+
+			let action_name = false;
+
+			for (const sequence in hotkeys_map[1]) {
+				if (hotkeys_map[1].hasOwnProperty(sequence)) {
+					if (sequence == hotkey_full) {
+						action_name = hotkeys_map[1][sequence];
+						break;
+					}
+				}
+			}
+
+			console.log('keyeventToAction', hotkey_full, '=>', action_name);
+
+			return action_name;
+		},
+		cleanupMemory: function(root) {
+			const dijits = dojo.query("[widgetid]", dijit.byId(root).domNode).map(dijit.byNode);
+
+			dijits.each(function (d) {
+				dojo.destroy(d.domNode);
+			});
+
+			$$("#" + root + " *").each(function (i) {
+				i.parentNode ? i.parentNode.removeChild(i) : true;
+			});
+		},
+		helpDialog: function(topic) {
+			const query = "backend.php?op=backend&method=help&topic=" + encodeURIComponent(topic);
+
+			if (dijit.byId("helpDlg"))
+				dijit.byId("helpDlg").destroyRecursive();
+
+			const dialog = new dijit.Dialog({
+				id: "helpDlg",
+				title: __("Help"),
+				style: "width: 600px",
+				href: query,
+			});
+
+			dialog.show();
+		},
+		displayDlg: function(title, id, param, callback) {
+			Notify.progress("Loading, please wait...", true);
+
+			const query = {op: "dlg", method: id, param: param};
+
+			xhrPost("backend.php", query, (transport) => {
+				try {
+					const content = transport.responseText;
+
+					let dialog = dijit.byId("infoBox");
+
+					if (!dialog) {
+						dialog = new dijit.Dialog({
+							title: title,
+							id: 'infoBox',
+							style: "width: 600px",
+							onCancel: function () {
+								return true;
+							},
+							onExecute: function () {
+								return true;
+							},
+							onClose: function () {
+								return true;
+							},
+							content: content
+						});
+					} else {
+						dialog.attr('title', title);
+						dialog.attr('content', content);
+					}
+
+					dialog.show();
+
+					Notify.close();
+
+					if (callback) callback(transport);
+				} catch (e) {
+					exception_error(e);
+				}
+			});
+
+			return false;
+		},
+		handleRpcJson: function(transport) {
+
+			const netalert_dijit = dijit.byId("net-alert");
+			let netalert = false;
+
+			if (netalert_dijit) netalert = netalert_dijit.domNode;
+
+			try {
+				const reply = JSON.parse(transport.responseText);
+
+				if (reply) {
+
+					const error = reply['error'];
+
+					if (error) {
+						const code = error['code'];
+						const msg = error['msg'];
+
+						console.warn("[handleRpcJson] received fatal error " + code + "/" + msg);
+
+						if (code != 0) {
+							fatalError(code, msg);
+							return false;
+						}
+					}
+
+					const seq = reply['seq'];
+
+					if (seq && this.get_seq() != seq) {
+						console.log("[handleRpcJson] sequence mismatch: " + seq +
+							" (want: " + this.get_seq() + ")");
+						return true;
+					}
+
+					const message = reply['message'];
+
+					if (message == "UPDATE_COUNTERS") {
+						console.log("need to refresh counters...");
+						App.setInitParam("last_article_id", -1);
+						Feeds.requestCounters(true);
+					}
+
+					const counters = reply['counters'];
+
+					if (counters)
+						Feeds.parseCounters(counters);
+
+					const runtime_info = reply['runtime-info'];
+
+					if (runtime_info)
+						App.parseRuntimeInfo(runtime_info);
+
+					if (netalert) netalert.hide();
+
+					return reply;
+
+				} else {
+					if (netalert)
+						netalert.show();
+					else
+						Notify.error("Communication problem with server.");
+				}
+
+			} catch (e) {
+				if (netalert)
+					netalert.show();
+				else
+					Notify.error("Communication problem with server.");
+
+				console.error(e);
+			}
+
+			return false;
+		},
+		parseRuntimeInfo: function(data) {
+			for (const k in data) {
+				if (data.hasOwnProperty(k)) {
+					const v = data[k];
+
+					console.log("RI:", k, "=>", v);
+
+					if (k == "daemon_is_running" && v != 1) {
+						Notify.error("<span onclick=\"App.explainError(1)\">Update daemon is not running.</span>", true);
+						return;
+					}
+
+					if (k == "update_result") {
+						const updatesIcon = dijit.byId("updatesIcon").domNode;
+
+						if (v) {
+							Element.show(updatesIcon);
+						} else {
+							Element.hide(updatesIcon);
+						}
+					}
+
+					if (k == "daemon_stamp_ok" && v != 1) {
+						Notify.error("<span onclick=\"App.explainError(3)\">Update daemon is not updating feeds.</span>", true);
+						return;
+					}
+
+					if (k == "max_feed_id" || k == "num_feeds") {
+						if (App.getInitParam(k) != v) {
+							console.log("feed count changed, need to reload feedlist.");
+							Feeds.reload();
+						}
+					}
+
+					this.setInitParam(k, v);
+				}
+			}
+
+			PluginHost.run(PluginHost.HOOK_RUNTIME_INFO_LOADED, data);
+		},
+		backendSanityCallback: function (transport) {
+
+			const reply = JSON.parse(transport.responseText);
+
+			if (!reply) {
+				fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
+				return;
+			}
+
+			const error_code = reply['error']['code'];
+
+			if (error_code && error_code != 0) {
+				return fatalError(error_code, reply['error']['message']);
+			}
+
+			console.log("sanity check ok");
+
+			const params = reply['init-params'];
+
+			if (params) {
+				console.log('reading init-params...');
+
+				for (const k in params) {
+					if (params.hasOwnProperty(k)) {
+						switch (k) {
+							case "label_base_index":
+								_label_base_index = parseInt(params[k]);
+								break;
+							case "hotkeys":
+								// filter mnemonic definitions (used for help panel) from hotkeys map
+								// i.e. *(191)|Ctrl-/ -> *(191)
+
+								const tmp = [];
+								for (const sequence in params[k][1]) {
+									if (params[k][1].hasOwnProperty(sequence)) {
+										const filtered = sequence.replace(/\|.*$/, "");
+										tmp[filtered] = params[k][1][sequence];
+									}
+								}
+
+								params[k][1] = tmp;
+								break;
+						}
+
+						console.log("IP:", k, "=>", params[k]);
+						this.setInitParam(k, params[k]);
+					}
+				}
+
+				// PluginHost might not be available on non-index pages
+				window.PluginHost && PluginHost.run(PluginHost.HOOK_PARAMS_LOADED, App._initParams);
+			}
+
+			this.initSecondStage();
+		},
+		explainError: function(code) {
+			return this.displayDlg(__("Error explained"), "explainError", code);
+		},
 	});
 });
diff --git a/js/Article.js b/js/Article.js
index b48d82489..1a60f8740 100644
--- a/js/Article.js
+++ b/js/Article.js
@@ -97,7 +97,7 @@ define(["dojo/_base/declare"], function (declare) {
 			Article.setActive(id);
 		},
 		render: function (article) {
-			Utils.cleanupMemory("content-insert");
+			App.cleanupMemory("content-insert");
 
 			dijit.byId("headlines-wrap-inner").addChild(
 				dijit.byId("content-insert"));
@@ -144,7 +144,7 @@ define(["dojo/_base/declare"], function (declare) {
 
 				xhrPost("backend.php", {op: "article", method: "view", id: id, cids: cids.toString()}, (transport) => {
 					try {
-						const reply = Utils.handleRpcJson(transport);
+						const reply = App.handleRpcJson(transport);
 
 						if (reply) {
 
diff --git a/js/Feeds.js b/js/Feeds.js
index d5371779f..878e503d7 100644
--- a/js/Feeds.js
+++ b/js/Feeds.js
@@ -129,13 +129,13 @@ define(["dojo/_base/declare"], function (declare) {
 
 				this.counters_last_request = timestamp;
 
-				let query = {op: "rpc", method: "getAllCounters", seq: Utils.next_seq()};
+				let query = {op: "rpc", method: "getAllCounters", seq: App.next_seq()};
 
 				if (!force)
 					query.last_article_id = App.getInitParam("last_article_id");
 
 				xhrPost("backend.php", query, (transport) => {
-					Utils.handleRpcJson(transport);
+					App.handleRpcJson(transport);
 				});
 
 			} else {
@@ -196,7 +196,7 @@ define(["dojo/_base/declare"], function (declare) {
 
 					try {
 						Feeds.init();
-						Utils.setLoadingProgress(25);
+						App.setLoadingProgress(25);
 					} catch (e) {
 						exception_error(e);
 					}
@@ -210,7 +210,7 @@ define(["dojo/_base/declare"], function (declare) {
 		init: function() {
 			console.log("in feedlist init");
 
-			Utils.setLoadingProgress(50);
+			App.setLoadingProgress(50);
 
 			document.onkeydown = (event) => { App.hotkeyHandler(event) };
 			window.setInterval(() => { Headlines.catchupBatched() }, 10 * 1000);
@@ -461,7 +461,7 @@ define(["dojo/_base/declare"], function (declare) {
 			Notify.progress("Loading, please wait...", true);
 
 			xhrPost("backend.php", catchup_query, (transport) => {
-				Utils.handleRpcJson(transport);
+				App.handleRpcJson(transport);
 
 				const show_next_feed = App.getInitParam("on_catchup_show_next_feed") == "1";
 
@@ -520,7 +520,7 @@ define(["dojo/_base/declare"], function (declare) {
 				Notify.progress("Loading, please wait...", true);
 
 				xhrPost("backend.php", {op: "rpc", method: "catchupFeed", feed_id: id, is_cat: false}, (transport) => {
-					Utils.handleRpcJson(transport);
+					App.handleRpcJson(transport);
 				});
 			}
 		},
@@ -633,7 +633,7 @@ define(["dojo/_base/declare"], function (declare) {
 			console.log("in update_random_feed");
 
 			xhrPost("backend.php", {op: "rpc", method: "updateRandom"}, (transport) => {
-				Utils.handleRpcJson(transport, true);
+				App.handleRpcJson(transport, true);
 			});
 		},
 	});
diff --git a/js/Headlines.js b/js/Headlines.js
index 1bcd35896..3ec83170e 100755
--- a/js/Headlines.js
+++ b/js/Headlines.js
@@ -222,7 +222,7 @@ define(["dojo/_base/declare"], function (declare) {
 			}
 		},
 		onLoaded: function(transport, offset) {
-			const reply = Utils.handleRpcJson(transport);
+			const reply = App.handleRpcJson(transport);
 
 			console.log("Headlines.onLoaded: offset=", offset);
 
@@ -438,7 +438,7 @@ define(["dojo/_base/declare"], function (declare) {
 			Notify.progress("Loading, please wait...");
 
 			xhrPost("backend.php", query, (transport) => {
-				Utils.handleRpcJson(transport);
+				App.handleRpcJson(transport);
 				if (callback) callback(transport);
 			});
 		},
@@ -460,7 +460,7 @@ define(["dojo/_base/declare"], function (declare) {
 			};
 
 			xhrPost("backend.php", query, (transport) => {
-				Utils.handleRpcJson(transport);
+				App.handleRpcJson(transport);
 			});
 		},
 		selectionTogglePublished: function(ids) {
@@ -482,7 +482,7 @@ define(["dojo/_base/declare"], function (declare) {
 				};
 
 				xhrPost("backend.php", query, (transport) => {
-					Utils.handleRpcJson(transport);
+					App.handleRpcJson(transport);
 				});
 			}
 		},
@@ -507,7 +507,7 @@ define(["dojo/_base/declare"], function (declare) {
 
 				if (!client_only)
 					xhrPost("backend.php", query, (transport) => {
-						Utils.handleRpcJson(transport);
+						App.handleRpcJson(transport);
 					});
 			}
 		},
@@ -533,7 +533,7 @@ define(["dojo/_base/declare"], function (declare) {
 
 				if (!client_only)
 					xhrPost("backend.php", query, (transport) => {
-						Utils.handleRpcJson(transport);
+						App.handleRpcJson(transport);
 					});
 
 			}
@@ -654,7 +654,7 @@ define(["dojo/_base/declare"], function (declare) {
 				if (row.className != origClassName)
 					xhrPost("backend.php",
 						{op: "rpc", method: "catchupSelected", cmode: cmode, ids: id}, (transport) => {
-							Utils.handleRpcJson(transport);
+							App.handleRpcJson(transport);
 						});
 			}
 		},
@@ -672,7 +672,7 @@ define(["dojo/_base/declare"], function (declare) {
 			};
 
 			xhrPost("backend.php", query, (transport) => {
-				Utils.handleRpcJson(transport);
+				App.handleRpcJson(transport);
 				this.onLabelsUpdated(transport);
 			});
 		},
@@ -690,7 +690,7 @@ define(["dojo/_base/declare"], function (declare) {
 			};
 
 			xhrPost("backend.php", query, (transport) => {
-				Utils.handleRpcJson(transport);
+				App.handleRpcJson(transport);
 				this.onLabelsUpdated(transport);
 			});
 		},
@@ -721,7 +721,7 @@ define(["dojo/_base/declare"], function (declare) {
 			const query = {op: "rpc", method: "delete", ids: rows.toString()};
 
 			xhrPost("backend.php", query, (transport) => {
-				Utils.handleRpcJson(transport);
+				App.handleRpcJson(transport);
 				Feeds.reloadCurrent();
 			});
 		},
@@ -850,7 +850,7 @@ define(["dojo/_base/declare"], function (declare) {
 			const query = {op: "rpc", method: op, ids: rows.toString()};
 
 			xhrPost("backend.php", query, (transport) => {
-				Utils.handleRpcJson(transport);
+				App.handleRpcJson(transport);
 				Feeds.reloadCurrent();
 			});
 		},
@@ -888,7 +888,7 @@ define(["dojo/_base/declare"], function (declare) {
 				};
 
 				xhrPost("backend.php", query, (transport) => {
-					const reply = Utils.handleRpcJson(transport);
+					const reply = App.handleRpcJson(transport);
 
 					if (reply) {
 						const batch = reply.ids;
@@ -965,7 +965,7 @@ define(["dojo/_base/declare"], function (declare) {
 					};
 
 					xhrPost("backend.php", query, (transport) => {
-						Utils.handleRpcJson(transport);
+						App.handleRpcJson(transport);
 					});
 				}
 			}
diff --git a/js/Utils.js b/js/Utils.js
deleted file mode 100644
index d1de08b2c..000000000
--- a/js/Utils.js
+++ /dev/null
@@ -1,330 +0,0 @@
-'use strict'
-/* global __, ngettext */
-define(["dojo/_base/declare"], function (declare) {
-	return declare("fox.Utils", null, {
-		_rpc_seq: 0,
-		hotkey_prefix: 0,
-		hotkey_prefix_pressed: false,
-		hotkey_prefix_timeout: 0,
-		urlParam: function(param) {
-			return String(window.location.href).parseQuery()[param];
-		},
-		next_seq: function() {
-			this._rpc_seq += 1;
-			return this._rpc_seq;
-		},
-		get_seq: function() {
-			return this._rpc_seq;
-		},
-		setLoadingProgress: function(p) {
-			loading_progress += p;
-
-			if (dijit.byId("loading_bar"))
-				dijit.byId("loading_bar").update({progress: loading_progress});
-
-			if (loading_progress >= 90)
-				Element.hide("overlay");
-
-		},
-		keyeventToAction: function(event) {
-
-			const hotkeys_map = App.getInitParam("hotkeys");
-			const keycode = event.which;
-			const keychar = String.fromCharCode(keycode).toLowerCase();
-
-			if (keycode == 27) { // escape and drop prefix
-				this.hotkey_prefix = false;
-			}
-
-			if (keycode == 16 || keycode == 17) return; // ignore lone shift / ctrl
-
-			if (!this.hotkey_prefix && hotkeys_map[0].indexOf(keychar) != -1) {
-
-				this.hotkey_prefix = keychar;
-				$("cmdline").innerHTML = keychar;
-				Element.show("cmdline");
-
-				window.clearTimeout(this.hotkey_prefix_timeout);
-				this.hotkey_prefix_timeout = window.setTimeout(() => {
-					this.hotkey_prefix = false;
-					Element.hide("cmdline");
-				}, 3 * 1000);
-
-				event.stopPropagation();
-
-				return false;
-			}
-
-			Element.hide("cmdline");
-
-			let hotkey_name = keychar.search(/[a-zA-Z0-9]/) != -1 ? keychar : "(" + keycode + ")";
-
-			// ensure ^*char notation
-			if (event.shiftKey) hotkey_name = "*" + hotkey_name;
-			if (event.ctrlKey) hotkey_name = "^" + hotkey_name;
-			if (event.altKey) hotkey_name = "+" + hotkey_name;
-			if (event.metaKey) hotkey_name = "%" + hotkey_name;
-
-			const hotkey_full = this.hotkey_prefix ? this.hotkey_prefix + " " + hotkey_name : hotkey_name;
-			this.hotkey_prefix = false;
-
-			let action_name = false;
-
-			for (const sequence in hotkeys_map[1]) {
-				if (hotkeys_map[1].hasOwnProperty(sequence)) {
-					if (sequence == hotkey_full) {
-						action_name = hotkeys_map[1][sequence];
-						break;
-					}
-				}
-			}
-
-			console.log('keyeventToAction', hotkey_full, '=>', action_name);
-
-			return action_name;
-		},
-		cleanupMemory: function(root) {
-			const dijits = dojo.query("[widgetid]", dijit.byId(root).domNode).map(dijit.byNode);
-
-			dijits.each(function (d) {
-				dojo.destroy(d.domNode);
-			});
-
-			$$("#" + root + " *").each(function (i) {
-				i.parentNode ? i.parentNode.removeChild(i) : true;
-			});
-		},
-		helpDialog: function(topic) {
-			const query = "backend.php?op=backend&method=help&topic=" + encodeURIComponent(topic);
-
-			if (dijit.byId("helpDlg"))
-				dijit.byId("helpDlg").destroyRecursive();
-
-			const dialog = new dijit.Dialog({
-				id: "helpDlg",
-				title: __("Help"),
-				style: "width: 600px",
-				href: query,
-			});
-
-			dialog.show();
-		},
-		displayDlg: function(title, id, param, callback) {
-			Notify.progress("Loading, please wait...", true);
-
-			const query = {op: "dlg", method: id, param: param};
-
-			xhrPost("backend.php", query, (transport) => {
-				try {
-					const content = transport.responseText;
-
-					let dialog = dijit.byId("infoBox");
-
-					if (!dialog) {
-						dialog = new dijit.Dialog({
-							title: title,
-							id: 'infoBox',
-							style: "width: 600px",
-							onCancel: function () {
-								return true;
-							},
-							onExecute: function () {
-								return true;
-							},
-							onClose: function () {
-								return true;
-							},
-							content: content
-						});
-					} else {
-						dialog.attr('title', title);
-						dialog.attr('content', content);
-					}
-
-					dialog.show();
-
-					Notify.close();
-
-					if (callback) callback(transport);
-				} catch (e) {
-					exception_error(e);
-				}
-			});
-
-			return false;
-		},
-		handleRpcJson: function(transport) {
-
-			const netalert_dijit = dijit.byId("net-alert");
-			let netalert = false;
-
-			if (netalert_dijit) netalert = netalert_dijit.domNode;
-
-			try {
-				const reply = JSON.parse(transport.responseText);
-
-				if (reply) {
-
-					const error = reply['error'];
-
-					if (error) {
-						const code = error['code'];
-						const msg = error['msg'];
-
-						console.warn("[handleRpcJson] received fatal error " + code + "/" + msg);
-
-						if (code != 0) {
-							fatalError(code, msg);
-							return false;
-						}
-					}
-
-					const seq = reply['seq'];
-
-					if (seq && this.get_seq() != seq) {
-						console.log("[handleRpcJson] sequence mismatch: " + seq +
-							" (want: " + this.get_seq() + ")");
-						return true;
-					}
-
-					const message = reply['message'];
-
-					if (message == "UPDATE_COUNTERS") {
-						console.log("need to refresh counters...");
-						App.setInitParam("last_article_id", -1);
-						Feeds.requestCounters(true);
-					}
-
-					const counters = reply['counters'];
-
-					if (counters)
-						Feeds.parseCounters(counters);
-
-					const runtime_info = reply['runtime-info'];
-
-					if (runtime_info)
-						Utils.parseRuntimeInfo(runtime_info);
-
-					if (netalert) netalert.hide();
-
-					return reply;
-
-				} else {
-					if (netalert)
-						netalert.show();
-					else
-						Notify.error("Communication problem with server.");
-				}
-
-			} catch (e) {
-				if (netalert)
-					netalert.show();
-				else
-					Notify.error("Communication problem with server.");
-
-				console.error(e);
-			}
-
-			return false;
-		},
-		parseRuntimeInfo: function(data) {
-			for (const k in data) {
-				if (data.hasOwnProperty(k)) {
-					const v = data[k];
-
-					console.log("RI:", k, "=>", v);
-
-					if (k == "daemon_is_running" && v != 1) {
-						Notify.error("<span onclick=\"Utils.explainError(1)\">Update daemon is not running.</span>", true);
-						return;
-					}
-
-					if (k == "update_result") {
-						const updatesIcon = dijit.byId("updatesIcon").domNode;
-
-						if (v) {
-							Element.show(updatesIcon);
-						} else {
-							Element.hide(updatesIcon);
-						}
-					}
-
-					if (k == "daemon_stamp_ok" && v != 1) {
-						Notify.error("<span onclick=\"Utils.explainError(3)\">Update daemon is not updating feeds.</span>", true);
-						return;
-					}
-
-					if (k == "max_feed_id" || k == "num_feeds") {
-						if (App.getInitParam(k) != v) {
-							console.log("feed count changed, need to reload feedlist.");
-							Feeds.reload();
-						}
-					}
-
-					App.setInitParam(k, v);
-				}
-			}
-
-			PluginHost.run(PluginHost.HOOK_RUNTIME_INFO_LOADED, data);
-		},
-		backendSanityCallback: function (transport) {
-
-			const reply = JSON.parse(transport.responseText);
-
-			if (!reply) {
-				fatalError(3, "Sanity check: invalid RPC reply", transport.responseText);
-				return;
-			}
-
-			const error_code = reply['error']['code'];
-
-			if (error_code && error_code != 0) {
-				return fatalError(error_code, reply['error']['message']);
-			}
-
-			console.log("sanity check ok");
-
-			const params = reply['init-params'];
-
-			if (params) {
-				console.log('reading init-params...');
-
-				for (const k in params) {
-					if (params.hasOwnProperty(k)) {
-						switch (k) {
-							case "label_base_index":
-								_label_base_index = parseInt(params[k]);
-								break;
-							case "hotkeys":
-								// filter mnemonic definitions (used for help panel) from hotkeys map
-								// i.e. *(191)|Ctrl-/ -> *(191)
-
-								const tmp = [];
-								for (const sequence in params[k][1]) {
-									if (params[k][1].hasOwnProperty(sequence)) {
-										const filtered = sequence.replace(/\|.*$/, "");
-										tmp[filtered] = params[k][1][sequence];
-									}
-								}
-
-								params[k][1] = tmp;
-								break;
-						}
-
-						console.log("IP:", k, "=>", params[k]);
-						App.setInitParam(k, params[k]);
-					}
-				}
-
-				// PluginHost might not be available on non-index pages
-				window.PluginHost && PluginHost.run(PluginHost.HOOK_PARAMS_LOADED, App._initParams);
-			}
-
-			App.initSecondStage();
-		},
-		explainError: function(code) {
-			return this.displayDlg(__("Error explained"), "explainError", code);
-		},
-
-	});
-});
diff --git a/js/prefs.js b/js/prefs.js
index 75f285b38..3600c5fb1 100755
--- a/js/prefs.js
+++ b/js/prefs.js
@@ -2,7 +2,6 @@
 /* global dijit, __ */
 
 let App;
-let Utils;
 let CommonDialogs;
 let Filters;
 let Users;
@@ -43,7 +42,6 @@ require(["dojo/_base/kernel",
 	"dojo/data/ItemFileWriteStore",
 	"lib/CheckBoxStoreModel",
 	"lib/CheckBoxTree",
-	"fox/Utils",
 	"fox/CommonDialogs",
 	"fox/CommonFilters",
 	"fox/PrefUsers",
@@ -62,7 +60,6 @@ require(["dojo/_base/kernel",
 						report_error(message, filename, lineno, colno, error);
 					};
 
-					Utils = fox.Utils();
 					CommonDialogs = fox.CommonDialogs();
 					Filters = fox.CommonFilters();
 					Users = fox.PrefUsers();
@@ -70,39 +67,41 @@ require(["dojo/_base/kernel",
 
 					parser.parse();
 
-					Utils.setLoadingProgress(50);
+					this.setLoadingProgress(50);
 
 					const clientTzOffset = new Date().getTimezoneOffset() * 60;
 					const params = {op: "rpc", method: "sanityCheck", clientTzOffset: clientTzOffset};
 
 					xhrPost("backend.php", params, (transport) => {
 						try {
-							Utils.backendSanityCallback(transport);
+							this.backendSanityCallback(transport);
 						} catch (e) {
 							exception_error(e);
 						}
 					});
 				},
 				initSecondStage: function() {
-					document.onkeydown = () => { App.hotkeyHandler(event) };
-					Utils.setLoadingProgress(50);
+					this.enableCsrfSupport();
+
+					document.onkeydown = (event) => { App.hotkeyHandler(event) };
+					App.setLoadingProgress(50);
 					Notify.close();
 
-					let tab = Utils.urlParam('tab');
+					let tab = App.urlParam('tab');
 
 					if (tab) {
 						tab = dijit.byId(tab + "Tab");
 						if (tab) {
 							dijit.byId("pref-tabs").selectChild(tab);
 
-							switch (Utils.urlParam('method')) {
+							switch (App.urlParam('method')) {
 								case "editfeed":
 									window.setTimeout(function () {
-										CommonDialogs.editFeed(Utils.urlParam('methodparam'))
+										CommonDialogs.editFeed(App.urlParam('methodparam'))
 									}, 100);
 									break;
 								default:
-									console.warn("initSecondStage, unknown method:", Utils.urlParam("method"));
+									console.warn("initSecondStage, unknown method:", App.urlParam("method"));
 							}
 						}
 					} else {
@@ -124,7 +123,7 @@ require(["dojo/_base/kernel",
 				hotkeyHandler: function (event) {
 					if (event.target.nodeName == "INPUT" || event.target.nodeName == "TEXTAREA") return;
 
-					const action_name = Utils.keyeventToAction(event);
+					const action_name = App.keyeventToAction(event);
 
 					if (action_name) {
 						switch (action_name) {
@@ -138,7 +137,7 @@ require(["dojo/_base/kernel",
 								Filters.quickAddFilter();
 								return false;
 							case "help_dialog":
-								Utils.helpDialog("main");
+								App.helpDialog("main");
 								return false;
 							default:
 								console.log("unhandled action: " + action_name + "; keycode: " + event.which);
diff --git a/js/tt-rss.js b/js/tt-rss.js
index ec52755a1..446c6393b 100644
--- a/js/tt-rss.js
+++ b/js/tt-rss.js
@@ -2,7 +2,6 @@
 /* global dijit,__ */
 
 let App;
-let Utils;
 let CommonDialogs;
 let Filters;
 let Feeds;
@@ -46,7 +45,6 @@ require(["dojo/_base/kernel",
 	"dijit/tree/dndSource",
 	"dijit/tree/ForestStoreModel",
 	"dojo/data/ItemFileWriteStore",
-	"fox/Utils",
 	"fox/CommonDialogs",
 	"fox/CommonFilters",
 	"fox/Feeds",
@@ -67,7 +65,6 @@ require(["dojo/_base/kernel",
 						report_error(message, filename, lineno, colno, error);
 					};
 
-					Utils = fox.Utils();
 					CommonDialogs = fox.CommonDialogs();
 					Filters = fox.CommonFilters();
 					Feeds = fox.Feeds();
@@ -80,7 +77,7 @@ require(["dojo/_base/kernel",
 					if (!this.genericSanityCheck())
 						return;
 
-					Utils.setLoadingProgress(30);
+					this.setLoadingProgress(30);
 					this.initHotkeyActions();
 
 					const a = document.createElement('audio');
@@ -98,7 +95,7 @@ require(["dojo/_base/kernel",
 
 					xhrPost("backend.php", params, (transport) => {
 						try {
-							Utils.backendSanityCallback(transport);
+							App.backendSanityCallback(transport);
 						} catch (e) {
 							exception_error(e);
 						}
@@ -149,7 +146,7 @@ require(["dojo/_base/kernel",
 						Feeds.setActive(hash_feed_id, hash_feed_is_cat);
 					}
 
-					Utils.setLoadingProgress(50);
+					App.setLoadingProgress(50);
 
 					ArticleCache.clear();
 
@@ -193,7 +190,7 @@ require(["dojo/_base/kernel",
 				hotkeyHandler(event) {
 					if (event.target.nodeName == "INPUT" || event.target.nodeName == "TEXTAREA") return;
 
-					const action_name = Utils.keyeventToAction(event);
+					const action_name = App.keyeventToAction(event);
 
 					if (action_name) {
 						const action_func = this.hotkey_actions[action_name];
@@ -414,7 +411,7 @@ require(["dojo/_base/kernel",
 						Feeds.open({feed: -2});
 					};
 					this.hotkey_actions["goto_tagcloud"] = function () {
-						Utils.displayDlg(__("Tag cloud"), "printTagCloud");
+						App.displayDlg(__("Tag cloud"), "printTagCloud");
 					};
 					this.hotkey_actions["goto_prefs"] = function () {
 						document.location.href = "prefs.php";
@@ -469,7 +466,7 @@ require(["dojo/_base/kernel",
 						}
 					};
 					this.hotkey_actions["help_dialog"] = function () {
-						Utils.helpDialog("main");
+						App.helpDialog("main");
 					};
 					this.hotkey_actions["toggle_combined_mode"] = function () {
 						Notify.progress("Loading, please wait...");
@@ -504,7 +501,7 @@ require(["dojo/_base/kernel",
 							document.location.href = "backend.php?op=logout";
 							break;
 						case "qmcTagCloud":
-							Utils.displayDlg(__("Tag cloud"), "printTagCloud");
+							App.displayDlg(__("Tag cloud"), "printTagCloud");
 							break;
 						case "qmcSearch":
 							Feeds.search();
@@ -560,7 +557,7 @@ require(["dojo/_base/kernel",
 							}
 							break;
 						case "qmcHKhelp":
-							Utils.helpDialog("main");
+							App.helpDialog("main");
 							break;
 						default:
 							console.log("quickMenuGo: unknown action: " + opid);