Added ability to drop files into file selector.
Fix DAWNSCI-155, trim whitespace from input directory if necessay
COMMON.RCP - remove warnings
MXGDA-412 - create utilities class for handling extension point elements
MXGDA-489: Text would not be 'greyed out' when the box is disabled if the value was out of bounds (i.e. the text was red), logic updated so the box enables/disables correctly
MXGDA-591 add max/min are valid fields

 * we do not want 0 to be valid as a minimum value for transmission
MXGDA-591 make tooltip show signs correctly based on max/min valid
Merge remote-tracking branch 'origin/8.20'
Merge remote-tracking branch 'origin/1.1'

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