added failing test refs #1107, #1400

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@16876 29f149b2-0c63-11e1-8f5c-a347f6a9acd0
now detecting collisions with partial occupators. surprise: they exist. fix #1400

git-svn-id: http://svn.code.sf.net/p/sumo/code/trunk/sumo@16877 29f149b2-0c63-11e1-8f5c-a347f6a9acd0