[GEOT-4949]: Adding ImageUtilities and ColorUtilities constant and methods
[GEOT-4948]: Adding DrawableBitSet
Merge pull request #610 from dromagnoli/GEOT-4949

[GEOT-4949]: Adding ImageUtilities / ColorUtilities constant and methods
Merge pull request #611 from dromagnoli/GEOT-4948

[GEOT-4948]: Adding DrawableBitSet