Achievement system proto
Achievements touchoup #1, squash me
Rake task to destroy users that are not referenced by anything
Enforce request_base_uri is passed to Leaderboard#api_fields
Added a special action on AppsController for end to end testing
Cleanup of Achievement Scores
include purge_test_data route
Simplify AchievementScore#progress query
Modified dashboard query for users participating in achievements
Added script to hit API endpoints, documenting!
Merge branch 'achievements_1' into development.  Thank you, Brandon!