Improve display of numpy vectors for rotations and avoid three dots in print

changed the reference to test the convergence for a constant measurement
Replace the pop task function by rm
Simplify the CMakeLists for the installing the scripts
Replace the pop task function by rm (2)

refer to 46f156e04c6595fe5e541498e335c41cf6703969
Add the scripts folder to the CMakeLists.
Add sys library importation for the python scripts
Update the python script to allow the compensation
Improve the documentation and the display for the compensation
Add a new output signal which is a 6D vector position theta u
improve the demo by using the new output signal
Replace Euler Angles by Theta U representation, but still don't turn...
update the scenario to use the flexibility estimator