Altered:
- Changed how flushCDFToDisk() is called.  Will need to test it on the
beamline before knowing if it fixes the issue.
Merge branch 'master' into Issue693
Erroneously didn't build before pushing.

Removed:
- The last remaining instances of REIXSXASDetectors and some includes.

Altered:
- There was one instance of REIXSXASDetectors being used in the
application and that was to change the scaler mode (continuous or not).
I have changed it to use the scaler class that is now incorporated
inside of REIXS.  Just FYI @epengr.
Merge branch 'Issue693'