Improve Deck submit
* prevent users from editing tournament decks
* improve deck submist
 * deck select counter
 * prevent users from selecting additional decks
Polished Tournament features
* bracket display
* UI for tournament admin (user removal)
* fixed bug with bracket generation (import gem)
merge with master
Fixed tournament tests
Uncomment role migration
Merge pull request #409 from YiboDuan/bracket2

Bracket Finishing