* Restructured the way Teams are handled on a matchup.
* Resolved a bug where changing a team after creation would result in the new team not appearing as an option in the game "winner" dropdown.
* Added team thumbnails to event and matchup creation/edit
* Added holder.js to vendors for handling of generic thumbs.
Merge pull request #20 from cybergamer/dev

* Restructured the way Teams are handled on a matchup.