GUACAMOLE-152: Handle zoom changes with autoFit correctly.

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

@@ -154,7 +154,8 @@
                             <div class="zoom-ctrl">
                                 <input type="number" class="zoom-ctrl" guac-zoom-ctrl
                                         ng-model="client.clientProperties.scale"
-                                        ng-model-options="{ updateOn: 'blur submit' }" />%
+                                        ng-model-options="{ updateOn: 'blur submit' }"
+                                        ng-change="zoomSet();" />%
                             </div>
                             <div ng-click="zoomIn()" id="zoom-in"><img src="images/settings/zoom-in.png" alt="+"/></div>
                         </div>