add PV Root part name configurable in Spring
GDA-6029: provide options to add detector pixel size to GDA .nxs file created by scan.
implemented on 8.38, however you also need commit d04c3744969c68eb00a51023da82c73c01771f3e

http://jira.diamond.ac.uk/browse/GDA-6029
Merge remote-tracking branch 'origin/8.38'