Costmap Params simplified.
Catkin_make fixes:
* Catkin_make executed on src/vintersim instead on src
* Commented the build of laser_Station due to non-recognition of subscriber in message callback
Added some comments
Added static_map again and removed launching of node costmap_2d. Added no GUI .launch file
Finish merge_costmaps
Preparing release:

Version numbers and added changelog
README updated
Finish release-0.4.0