Replace ROISumWidget by RegionSumTool
Fixed BLXVIIIB-39, added to unit tests
Fixed BLXVIIIB-39, added to unit tests
Merge branch 'gda-8.30'

Conflicts:
	uk.ac.diamond.scisoft.analysis.rcp/src/uk/ac/diamond/scisoft/analysis/rcp/plotting/ROIProfilePlotWindow.java
Fixed conflicted merge(!)