added new level, added a few obstacles to the map, added signs + messages

reverted:
commit 4e583c7b7d20221aab78e0e72c281f32eb7d81f1
Author: matthiaskrgr <matthias.krueger@famsik.de>
Date:   Tue May 1 10:46:29 2012 +0200

    obstacles: implement transformers by int-ua.

(which removes the obstacle type)
loaded the test-level (sign messages were ok), saved the map, there were no
changed to the mapfile.