Draw the surface manager in application states

Instead of the SurfaceManagerGui class.

src/Application/PresentationState.cpp

@@ -13,6 +13,7 @@ PresentationState * PresentationState::instance(){
 }
 
 void PresentationState::draw(Application * app){
+	app->getSurfaceManager()->draw();
 	app->getGui()->draw();
 }
 

src/Application/ProjectionMappingState.cpp

@@ -17,6 +17,7 @@ ProjectionMappingState * ProjectionMappingState::instance(){
 }
 
 void ProjectionMappingState::draw(Application * app){
+	app->getSurfaceManager()->draw();
 	app->getGui()->draw();
 	
 	/*

src/Application/SourceSelectionState.cpp

@@ -13,6 +13,7 @@ SourceSelectionState * SourceSelectionState::instance(){
 }
 
 void SourceSelectionState::draw(Application * app){
+	app->getSurfaceManager()->draw();
 	app->getGui()->draw();
 	
 	Gui::instance()->getSurfaceHighlightWidget().setSurfaceManager(app->getSurfaceManager());

src/Application/TextureMappingState.cpp

@@ -14,6 +14,7 @@ TextureMappingState * TextureMappingState::instance(){
 
 void TextureMappingState::draw(Application * app){
 	app->getGui()->draw();
+	app->getSurfaceManager()->draw();
 	
 	Gui::instance()->getSurfaceHighlightWidget().setSurfaceManager(app->getSurfaceManager());
 	Gui::instance()->getSurfaceHighlightWidget().draw();