Scans from last run of client are now selectable

Bug introduced in commit 6e3a17a1
Merge remote-tracking branch 'origin/8.38.mt' into 8.38

Conflicts:
	uk.ac.gda.core/src/gda/scan/MultithreadedScanDataPointPipeline.java
Merge branch 'i16_gda-8.38'

Conflicts:
	uk.ac.gda.core/src/gda/scan/MultithreadedScanDataPointPipeline.java