save feedlist collapse state

feedlist.js

@@ -423,6 +423,10 @@ function init_collapsable_feedlist() {
 
 		if (fbtn) Element.show(fbtn);
 
+		if (getCookie("ttrss_vf_fclps") == 1) {
+			collapse_feedlist();
+		}
+
 	} catch (e) {
 		exception_error("init_hidden_feedlist", e);
 	}

tt-rss.js

@@ -781,6 +781,8 @@ function collapse_feedlist() {
 			if (fc) fc.style.left = fl.offsetWidth + "px";
 			if (ff) ff.style.left = (fl.offsetWidth-1) + "px";
 
+			setCookie("ttrss_vf_fclps", "0");
+
 		} else {
 			Element.hide(fl);
 			fbtn.value = ">>";
@@ -789,6 +791,8 @@ function collapse_feedlist() {
 			ft.style.left = "0px";
 			if (fc) fc.style.left = "0px";
 			if (ff) ff.style.left = "0px";
+
+			setCookie("ttrss_vf_fclps", "1");
 		}
 	} catch (e) {
 		exception_error(e, "toggle_feedlist");