Qt Designer plugin: Port to new signals & slots syntax.

Split ResourceHandler::updateResources(bool updateProjectResources)
into 2 slots to make it compatible to void signals.

Change-Id: I0614637cd575c45f9acd6514fe04fe08dfcfcff8
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

src/plugins/designer/resourcehandler.h

@@ -61,10 +61,13 @@ public:
     virtual ~ResourceHandler();
 
 public slots:
-    void updateResources(bool updateProjectResources = false);
+    void updateResources()        { updateResourcesHelper(false); }
+    void updateProjectResources() { updateResourcesHelper(true); }
 
 private:
     void ensureInitialized();
+    void updateResourcesHelper(bool updateProjectResources);
+
     QDesignerFormWindowInterface * const m_form;
     QStringList m_originalUiQrcPaths;
     bool m_initialized;