Add all main view titles and navbar translation keys

src/views/users.html

@@ -401,7 +401,7 @@
 
   <div class="text-left">
     <h2>
-      Users
+      {{ 'users.title' | tr }}
       <button class="btn btn-primary btn-outline pull-right" ng-click="useradd.show()">
         <i class="fa fa-user-plus"></i> New User
       </button>