BLXVI-64: Created DeferredAndTrajectoryScannableGroupIntegrationTest
BLXVI-61: DeferredAndTrajectoryScannableGroup now checks Scannable and
Motor Limits when operating continuously
BLXVI-62: DeferredAndTrajectoryScannableGroup now applies Scannable
offsets, scales and unit changes
BLXVI-63: Exposed
DeferredAndTrajectoryScannableGroup.positionForUnderlyingMotorsToScannable
for access to EpicsTrajectoryMoveControllerAdapter

Not pretty. Needs refactoring.
Merge branch '8.26.mt' of ssh://dascgitolite@dasc-git.diamond.ac.uk/gda/gda-core.git into 8.26.mt