gui: selection must be updated even if ROA VA doesn't change
gui: Removed 'action' cursor when hovering over the ROI selection
Merge branch 'master' of delmic-server.local:odemis
gui: Added custom dimming for diabled buttons
gui fix: Made selection creation from within the boundaries of an existing selection possible
gui: improve ROA/repetition/magnification interaction

Try to be clever, and link the ROA/repetition/magnification behaviour
so that it's simpler for the user, and still possible to pick any value.
Merge branch 'master' of vpn.delmic.com:odemis

whitespace conflicts

Conflicts:
	src/odemis/gui/dblmscopecanvas.py