Item list and match json

I added a LeagueItem class based heavily on the LeagueItem class from
the LeagueLibExtended repository. It includes the name, cost, and item
id of all the items. Additionally this commit includes the match json
document that is used to setup new summoners with couchdb. It is the
design document for matches and it is automatically added to a couchdb
table if the DocumentNotFound exception occurs
Updated stat controller and items for match cell

The match cell now displays the items bought by a summoner in any given
game. Stat controller has also been updated so that summoners can be
added to the stat viewer and the current summoner can be changed.