message: Updated rgbdslam_datasets.launch to keep all poses (even when not moving)
diff: <param name="Rtabmap/StartNewMapOnLoopClosure" type="string" value="true"/>
  <param name="RGBD/CreateOccupancyGrid" type="string" value="false"/>
  <param name="Rtabmap/CreateIntermediateNodes" type="string" value="true"/>
  + <param name="RGBD/LinearUpdate" type="string" value="0"/>
  + <param name="RGBD/AngularUpdate" type="string" value="0"/>
  <param name="frame_id" type="string" value="kinect"/>
  <param name="ground_truth_frame_id" type="string" value="world"/>
  