CoMJacobianDummy can take per body weight as parameters.
Allow to copy CoMJacobianDummy.
Use domain_error instead of runtime_error.
All some copy constructor in python binding.
Revert "Use jrl-cmakemodules macros and install Python files to site-packages."

This reverts commit 7e316e2c9cecfbb70652267f7e8dcdac17992079.