Let the Web UI know about its controller.

Change-Id: I6d3bd891173ee817202eac6732b324a61b0f41fc
Reviewed-on: http://gerrit.dmdirc.com/3232
Reviewed-by: Greg Holmes <greg@dmdirc.com>
Automatic-Compile: DMDirc Build Manager

src/com/dmdirc/addons/ui_web/WebInterfacePlugin.java

@@ -46,7 +46,7 @@ public class WebInterfacePlugin extends BasePlugin {
     /** {@inheritDoc} */
     @Override
     public void onLoad() {
-        getObjectGraph().get(WebInterfaceUI.class);
+        controller = getObjectGraph().get(WebInterfaceUI.class);
     }
 
     /**