Add a tastypie wrapper for the Event model. In order To preserve the old API's behaviour, i.e. when not specifying an event id, only future events are returned, I used override_urls.
Add test to verify that APIv2 is equivalent (at least) to the old API.
Fix the event APIv2 to account for retrieval of a single event.
Register the event resource
Merge pull request #50 from danzat/master

Add tastypie wrappers to the Event model for APIv2