frontend: change plugin initialization method

rhodecode/public/js/src/components/rhodecode-app/rhodecode-app.js

@@ -16,9 +16,25 b' var rhodeCodeApp = Polymer({'
         for (var i = 0; i < alertMessagePayloads.length; i++) {
             $.Topic('/notifications').publish(alertMessagePayloads[i]);
         }
+        this.initPlugins();
+        // after rest of application loads and topics get fired, launch connection
+        $(document).ready(function () {
         this.kickoffChannelstreamPlugin();
+        }.bind(this));
     },
 
+    initPlugins: function(){
+        for (var i = 0; i < window.APPLICATION_PLUGINS.length; i++) {
+            var pluginDef = window.APPLICATION_PLUGINS[i];
+            if (pluginDef.component){
+                var pluginElem = document.createElement(pluginDef.component);
+                this.shadowRoot.appendChild(pluginElem);
+                if (typeof pluginElem.init !== 'undefined'){
+                    pluginElem.init();
+                }
+            }
+        }
+    },
     /** proxy to channelstream connection */
     getChannelStreamConnection: function () {
         return this.$['channelstream-connection'];

rhodecode/templates/base/root.mako

@@ -70,6 +70,7 b" c.template_context['default_user'] = {"
             var templateContext = ${h.json.dumps(c.template_context)|n};
 
             var APPLICATION_URL = "${h.route_path('home').rstrip('/')}";
+            var APPLICATION_PLUGINS = [];
             var ASSET_URL = "${h.asset('')}";
             var DEFAULT_RENDERER = "${h.get_visual_attr(c, 'default_renderer')}";
             var CSRF_TOKEN = "${getattr(c, 'csrf_token', '')}";