Added 2 more algorithm properties. Refs #8472.
Made the new feature work.  Refs #8472.
Expanded unit test for new feature. Refs #8472.
Renamed a property b/c python.  Refs #8472.
Removed background option FullprofPolynomial. Refs #8472.
Merge remote branch 'origin/feature/8472_process_bkgd_semiauto'