Merge branch 'master', remote-tracking branch 'upstream/master'
nulling release of rocon_tutorials due to missing tags

From #394
rocon_app_platform also missing tags

reverting from #394 
rocon_multimaster also missing tags

re #394
rocon_concert also missing

#394
rocon_msgs missing tags

#394
python-gridfs added to rosdep
Merge pull request #402 from rctoris/master

python-gridfs added to rosdep
Added rocon_rqt_plugins

Versions to come shortly once pre-releases are all working together.
Merge pull request #403 from stonier/patch-3

Added rocon_rqt_plugins
The rosjava_jni stack moved on GitHub

 * The the stack URI was updated to point to the new repo from
   GitHub.
Added rocon_rqt_plugins

Versions to come shortly once pre-releases are all working together.
Merge pull request #404 from gheorghelisca/master

rosjava_jni moved to GitHub.
Update doc/fuerte/tu-darmstadt-ros-pkg.rosinstall

added stack hector_navigation
Update doc/electric/tu-darmstadt-ros-pkg.rosinstall

added stack hector_navigation
Update doc/groovy/tu-darmstadt-ros-pkg.rosinstall

added stack hector_navigation
Merge pull request #405 from meyerj/master

added stack hector_navigation in tu-darmstadt-ros-pkg.rosinstall for electric/fuerte/groovy
Update releases/fuerte.yaml

Removing pcl & image-transport-plugins
Update releases/fuerte.yaml

Adding pcl release repository
Update releases/fuerte.yaml