Merge pull request #43 from ipa-fxm/hydro_dev

fix launch file
Merge pull request #44 from ipa-fxm/hydro_dev

bring in groovy updates
Merge pull request #45 from ipa-nhg/hydro_dev

Hydro dev updates
Merge pull request #46 from ipa-nhg/hydro_dev

install tags
add changelogs
0.5.1
remove dependency to gazebo_worlds
remove dep to gazebo_tools
remove dep to pr2 packages
remove deprecated files
missing install tags
Merge pull request #47 from ipa-fxm/hydro_dev

Install tags
fixed typo
Merge pull request #48 from ipa-fxm/hydro_dev

fixed typo
some catkin_lint
Merge branch 'hydro_dev' of github.com:ipa320/cob_simulation into hydro_dev
Merge pull request #49 from ipa-fxm/hydro_dev

Some more catkin_lint'ing