added 2 new fields to the create bracket page's grid (region and conference), and changed it to save team ids

also made some styling changes to the create bracket view, to increase the size of the teams grid
got create and update bracket page fully working

loading the selected brackets into ng-grid was a biotch

also: changed tournamentRef and usersRef to be $firebase objects, instead of Firebase objects
removed "angular-loading-bar", because I never saw any indication that it was working