Replaced Cython bindings with 'Boost-Bullet-Python' bindings.
Removed Cython wrappers.
Removed Cython related dependencies and doc strings.
Updated docu strings in 'PyBulletPhys'.
TLC in 'PyBulletPhysics'.
Renamed 'test_cython_bullet' to 'test_boost_bullet'.
Removed pair-cache test because 'pybullet' does not support it.
PEP8
Removed all RabbitMQ dependent Leonard classes.
Removed RabbitMQ dependencies in 'install.sh'.
Boost-Python-Bullet wrapper is now installed via PIP.
Updated Dockerfile.
Updated overview in docu.