GUACAMOLE-352: Remove Guacamole menu entirely when closed. Input fields within the menu must not continue to receive input.

guacamole/src/main/webapp/app/client/templates/client.html

@@ -38,7 +38,7 @@
 
     <!-- Menu -->
     <div class="menu" ng-class="{open: menu.shown}" id="guac-menu">
-        <div class="menu-content">
+        <div class="menu-content" ng-if="menu.shown">
 
             <!-- Stationary header -->
             <div class="header">