Merge branch 'groovy-devel' into hydro-devel.

Files that had conflicts (should have been taken care of with this commit):
	rqt_moveit/package.xml
	rqt_nav_view/package.xml
	rqt_pose_view/package.xml
	rqt_robot_dashboard/package.xml
	rqt_robot_monitor/package.xml
	rqt_robot_plugins/package.xml
	rqt_robot_steering/package.xml
	rqt_runtime_monitor/package.xml
	rqt_rviz/package.xml
	rqt_tf_tree/package.xml
Omit a pkg that doesn't yet build due to a missing dependent file.