Fixes to number box causing symptoms in DAWNSCI-580 (and more tests)
BLXX-123 change NumberBox behaviour to not enforce the number of decimal
places while the user is typing

This makes the widget very awkward to use.
GDA - NumberBox does not accept numbers of form 3.
Merge remote-tracking branch 'origin/8.30'

Conflicts:
	uk.ac.gda.common.rcp/src/uk/ac/gda/richbeans/components/scalebox/NumberBox.java
	uk.ac.gda.common.rcp/test/uk/ac/gda/richbeans/components/scalebox/NumberBoxTest.java