updated to clear past obstacles cherry pick
updated the voxel map layer to keep track of added obstacles cherry pick
 removed some commented out code and added some comments;
removed some comments
cleaned up the code
updated the map bounds such that the costmap layer clears the full area (including the cleared nodes)
fixed issue with the map only partly being cleared - this should now be fixed (caused by the inflation layer inflating old obstacles and the bounds not being cleared)
removed debugging code
last cleanup for bosch-robot-devel version
tested and cleared costmap obstacle timeout feature files
Merge pull request #10 from Marinsky/costmap_obstacle_timeout

Costmap obstacle timeout