Implemented a new activity that uses tabs to display the player's
highscore and trophies. Also created a fragment for the tabs.
got basic working tabs for displaying leaderboard
got tabs to switch fragments, and added an activity for the user to
login and register.
Merge remote-tracking branch 'sbonner1/master'
changes
stuff
added user model to the app project.
small changes to controllers. fixed the problem with get and post