Add async support
   add fragments for exchange and market
   add styles for market selections
   start ui using jquery since stapes is confusing me and blocking progress
   abortive ui in ui folder: on hold
   create cardset that is used by hand and exchange as well as payment
   deck not needed
   refactor exchange and hand as cardsets
   game, market, player, exchange changed to support async
   tile is decodable from the server
   welcome refactored for async and bower inclusions