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/InverseDynamics/InverseDynamicsExample.cpp

@@ -208,7 +208,7 @@ void InverseDynamicsExample::initPhysics()
         }
         // add joint target controls
         qd.resize(m_multiBody->getNumDofs());
-		qd[3]=B3_HALF_PI;
+		
         qd_name.resize(m_multiBody->getNumDofs());
        	q_name.resize(m_multiBody->getNumDofs());