Moved slim $app class into DRR api class constructor to keep DRY.
Refactored get users function to return results from query_drr_users
Introduced two new functions to query and fetch latest user media results. still tweaking sql statement to fetch everything needed. This is the bast starting point.
New function to query and return drr users.
Slim route to call user media.
Refactored users route to be RESTful.