Merge tag '1.4.9' into develop

Release: 1.4.9
Preparation for new development cycle after release 1.4.9
Fix display of error message
Fix checkbox problem
Fix bulk delete
Fix unneeded comeptitions when adding
Fix for mixed classifications.

When a user is has a different class for B&W compared to Color the classification is wrong.
Version bump 1.4.10-rc.1
Version bump 1.4.10
Merge branch 'release/1.4.10'