added cv_bridge
Merge pull request #2 from v01d/master

added cv_bridge from v01d
Update eigen_stl_containers.
Update description for random_numbers.
Update rqt-related packages.
Update qt_gui to version 0.2.18.
Add rqt_plot, rqt_bag and rqt_py_common.
Make sure rviz links with Ogre 1.8.
Update geometric_shapes.
Update robot_model.