Added:
- Built the scan action controller for the 3D scans.  It will still need
to be tested, but everything looks alright.
- It looks a fair bit simpler than the 2D scan action controller, but
that is because it is much more limited in detectors as well as motors.
Altered:
- Tweaked the code for identifying the area detectors to use
QFlags::testFlags() instead of integer comparison.
- In VESPERS2DScanConfiguration, fixed a bug where finding the number of
"yPoints" was using the step for the "x" direction.
- Moved the destructor in AM3DNormalizationAB.