Merge pull request #19 from JFickel/ember-tournaments

Ember tournaments
Merge pull request #20 from JFickel/ember-tournaments

Ember tournaments
Merge pull request #21 from JFickel/ember-tournaments

Ember tournaments
added icon avatar url -- fixed modal removal bug
mocked up bracket and fixed start action in tournament index controller
bracket associations were being cached on build -- had to add in a reload call
added method and templating for the user's currently competing team and opponent
forgot to add check if current user for currently competing team method