Better icon for Junk folder (#136)

skins/elastic/styles/widgets/lists.less

@@ -505,7 +505,7 @@ ul.treelist li {
             .font-icon-solid(@fa-var-paper-plane);
         }
         &.junk a:before {
-            .font-icon-solid(@fa-var-recycle);
+            .font-icon-solid(@fa-var-fire);
         }
         &.archive > a:before {
             .font-icon-solid(@fa-var-archive);

skins/elastic/styles/widgets/toolbar.less

@@ -106,7 +106,7 @@
             content: @fa-var-archive;
         }
         &.junk:before {
-            content: @fa-var-recycle;
+            content: @fa-var-fire;
         }
         &.enigma:before,
         &.encrypt:before {

skins/elastic/ui.js

@@ -1744,7 +1744,7 @@ function rcube_elastic_ui()
 
                 if (!is_mobile()) {
                     // Set popup height so it is less than the window height
-                    popup.css('max-height', Math.min(510, $(window).height() - 30));
+                    popup.css('max-height', Math.min(36 * 15 - 1, $(window).height() - 30));
                 }
             })
             .on('shown.bs.popover', function(event) {