[ADD #59] first things needed for saving ROIs in project files. Saving now works but loading does not. Also added some WORKING lighting for ROI boxes.
[FIX #268] colormapper does not crash anymore when sorting two textures. Reason was a invalidated iterator still being used after invalidation.
[CHANGE #259] colormapper now inserts loaded colormaps at the front but keeps ordering of the newly loaded ones and the current ones.
[CHANGE #259] colormapper ensures that project files with colormap orderings do not mix with the pre-existing colormap ordering.