changed comments in database config to reflect github repo and mysqli as only currently-supported db, adjusted pluralization typo on active_group var comments, refs #3109
Merge pull request #46 from thecoolestguy/admin3109

changed comments in database config to reflect github repo and mysqli as...
Merge branch 'master' of github.com:ilios/ilios into feat2902
session type filtering added for Mesh Terms, refs #2902
Merge branch 'feat2902' of github.com:thecoolestguy/ilios into feat2902