ros: added MapGraph rviz plugin to show trajectory, added ros service PublishMap

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/ros-pkg@1682 f169173b-cf89-36c8-b27e-44dbe73f0c83
first try of azimut3 navigation with RTAB-Map

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/ros-pkg@1718 f169173b-cf89-36c8-b27e-44dbe73f0c83
ros: added azimut3 rviz navigation config

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/ros-pkg@1720 f169173b-cf89-36c8-b27e-44dbe73f0c83