Allow to change the robot ip
Allow to change the robot ip and the haar_cascade xml file
Introduce calibration tools from 3d grid
Merge branch 'master' of github.com:lagadic/romeo_tk

Conflicts:
	CMakeLists.txt
	demos/face_servoing/servo_face_detection_visp_head.cpp
	demos/face_tracking/face_detection_visp.cpp