Rename addons view to system

We can rename the menu entry further but I wasn't sure if diagnostics
will be nicer. Diagnostics kinda overlaps with the graphs there and all

src/js/index.js

@@ -70,9 +70,6 @@ app.config(['$routeProvider', function ($routeProvider) {
     }).when('/users', {
         controller: 'UsersController',
         templateUrl: 'views/users.html?<%= revision %>'
-    }).when('/addons', {
-        controller: 'AddonsController',
-        templateUrl: 'views/addons.html?<%= revision %>'
     }).when('/appstore', {
         controller: 'AppStoreController',
         templateUrl: 'views/appstore.html?<%= revision %>'
@@ -109,6 +106,9 @@ app.config(['$routeProvider', function ($routeProvider) {
     }).when('/support', {
         controller: 'SupportController',
         templateUrl: 'views/support.html?<%= revision %>'
+    }).when('/system', {
+        controller: 'SystemController',
+        templateUrl: 'views/system.html?<%= revision %>'
     }).when('/tokens', {
         controller: 'TokensController',
         templateUrl: 'views/tokens.html?<%= revision %>'