GUAC-810: Resize client display depending only on containing element, not entire window.

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

@@ -21,6 +21,9 @@
        THE SOFTWARE.
     -->
 
+    <!-- Resize sensor -->
+    <iframe class="resize-sensor" src="app/client/templates/blank.html"></iframe>
+    
     <!-- Display -->
     <div class="displayOuter">
         <div class="displayMiddle">