Merge pull request #51 from ipa-fxm/hydro_dev

Beautify install tags and correct PYTHON_DESTINATION
change physic setings to improve simulation performance
Merge pull request #52 from ipa-fxm/hydro_dev

no OpenCV required in cob_gazebo
Moved floor pose
Merge branch 'hydro_dev' of github.com:ipa-nhg/cob_simulation into hydro_dev
Merge pull request #53 from ipa-nhg/hydro_dev

moved floor
Merge branch 'hydro_dev' of github.com:abubeck/cob_simulation into hydro_dev