Removed many memoryleaks in Example Browser, reducing some technical debt.

When running the Example Browser with Basic Example, 'visual leak detector' show no leak.
Many other individual examples still leak, so it is work-in-progress.
Disabled the profiler window (too many leaks)

examples/ExampleBrowser/GwenGUISupport/gwenUserInterface.h

@@ -26,6 +26,7 @@ class GwenUserInterface
 		virtual ~GwenUserInterface();
 		
 		void	init(int width, int height,Gwen::Renderer::Base* gwenRenderer,float retinaScale);
+		void	exit();
 		void	setFocus();
 		void	forceUpdateScrollBars();