Fixes SlideColorPicker color range allowing the user to pick white.
Fixes ColorPickerPanel release resources process.
Adds transparent left/right parring to SlideColorPicker.
Toolbar hides when moving or drawing
Play mode
Merge branch 'master' of github.com:e-ucm/ead
Merge pull request #864 from RotaruDan/drawFix

Draw fixes
wip