Remove unused ROS urdf (was replaced by Bullet UrdfParser.

Small refactoring for ExampleBrowser: move examples cpp files in the app/executable
Move ExtendedTutorials in its own app/executable as a test.

examples/Importers/ImportURDFDemo/ImportURDFSetup.cpp

@@ -11,9 +11,6 @@
 #include "../CommonInterfaces/CommonParameterInterface.h"
 #include "../../Utils/b3ResourcePath.h"
 
-#ifdef ENABLE_ROS_URDF
-#include "ROSURDFImporter.h"
-#endif
 #include "BulletUrdfImporter.h"
 
 
@@ -213,14 +210,6 @@ void ImportUrdfSetup::initPhysics()
 		b3Printf("using new URDF\n");
 		bla = new  BulletURDFImporter(m_guiHelper);
 	}
-#ifdef USE_ROS_URDF
- else
-	{
-		b3Printf("using ROS URDF\n");
-		bla = new ROSURDFImporter(m_guiHelper);
-	}
-  	newURDF = !newURDF;
-#endif//USE_ROS_URDF
 	URDFImporterInterface& u2b = *bla;
 	bool loadOk =  u2b.loadURDF(m_fileName);