nothing changed
added possibility to flip / unflip x axis
uncommented flipping
Update TakeCalibrationPicture.srv
Made Controller compile.
Implemented contains chessboard (#28)
Changed picture sending activation method.

Instead of setting ID to 0, which can collide if a camera has ID 0, we now set the dedicated flag global to true.
Merge branch 'pController'
Merge remote-tracking branch 'origin/implement_picture_quality_information'

Conflicts:
	src/controller/Controller.cpp
Solved naming conflict, rospy doesn't like global
Fixed wrong values whether the calibration image contains a chessboard
different decline for different land processes
changed debug output
Merge remote-tracking branch 'origin/master' into pController