using CVT_DEBUG

	modified:   CMakeLists.txt
	modified:   ../cvt_ros_bridge/CMakeLists.txt
merge

	modified:   CMakeLists.txt
stereo_view and image_view save images immediately

	modified:   cvt_ros/src/image_view.cpp
	modified:   cvt_ros/src/stereo_view.cpp
Merge branch 'master' of https://github.com/tum-uav/cvt_ros into debug