a try to fix sonar build
GWT upgrade, removed custom supersourced JRE emul stuff that made it into 2.6.0
#63: tidy up and improvement of RichtTextToolbar
#74: popup improvements
GWT downgrade
#67: completed color support (alpha, color modles, transformations, etc.)
#74: improved popup (button panel support)
Datype changes
#67: moved color stuff to util-datatype
small cleanups