add icon to support ticket category dropdown

+ added an option to add "fa-angle-down" to any dropdown

www/common/common-ui-elements.js

@@ -2155,6 +2155,11 @@ define([
                 'class': 'fa fa-caret-down',
             }).prependTo($button);
         }
+        if (config.angleDown) {
+            $('<span>', {
+                'class': 'fa fa-angle-down',
+            }).prependTo($button);
+        }
 
         // Menu
         var $innerblock = $('<div>', {'class': 'cp-dropdown-content'});

www/support/ui.js

@@ -119,6 +119,7 @@ Messages.support_category = "Category"; // XXX
         });
         var dropdownCfg = {
             text: Messages.support_category,
+            angleDown: 1,
             options: categories,
             container: $(container),
             isSelect: true