Notifications only sent when mouse is released instead of mouse
dragged.
GDA-5434 - Added flag to receive notifications on drag
BLXX-62 add constructor to override standard icon and tooltip
Merge remote-tracking branch 'origin/1.3'

Conflicts:
	uk.ac.gda.common.rcp/src/uk/ac/gda/richbeans/components/scalebox/RangeBox.java
	uk.ac.gda.common.rcp/src/uk/ac/gda/ui/components/Stepper.java