Update licence header

ui/src/app/layout/user-menu.tpl.html

@@ -1,3 +1,20 @@
+<!--
+
+    Copyright © 2016-2017 The Thingsboard Authors
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+
+-->
 <section layout="row">
     <div hide-xs hide-sm ng-show="vm.displayUserInfo" class="tb-user-info" layout="row">
         <md-icon aria-label="{{ 'home.avatar' | translate }}" class="material-icons tb-mini-avatar">account_circle</md-icon>