activated rotation for android 4.2
added rotation for android 4.2
Target can now not be drawn over he left and upper boarder of the
gameboard.
checkPosition deletes Target if no move to the Target is possible
reduced Target Size
Merge branch 'master' of https://github.com/inyrie/Robotz.git
Merge branch 'master' of https://github.com/inyrie/Robotz.git