Refs #8514 Added SURF Test

Added the SURF Reflectonomy test and the ReferenceResult asscociated with it
Refs #8514 Removed comment, renamed class

Renamed the class to be the same as the filename

Removed a comment
Refs #8514 Fix SURF System Test

The test had a couple of problems, a syntax error where I'd forgotten a colon and the lack of date in the Data Directory for it to perform the opperation on.

Both are now fixed
Merge branch 'feature/8514_Reflectometry_quick_system_test' into develop