completely restructured the JSON response for the given game view page. Lots of information so I put related information into sub-objects using jBuilder. jBuidler is pretty awesome!

 Added a paypal_transaction_id and a humblebundle_transaction_id to bundles and games.
added indiegala, google wallet and bundlestars transaction ids. The Bundlestars trans id will be where we save the invoice number from bundlestars.