Merge pull request #98 from ninjaferret/enhanced-voting

This should be voting done to a greater/lesser extent. It is
progressively enhanced so the buttons will do a postback to the vote
controller if Javascript is not enabled and the Javascript will take
control over submission

The information that we store is:

 - SessionId (maybe we should have called them talks... )
 - CookieID (a guid associated with the cookies used to store the user's
   votes)
 - Time Recorded
 - WebSessionId
 - UserId (if they are logged in)
 - IPAddress
 - User Agent
 - Referrer
 - Screen Resolution (at the moment just from the javascript)
 - The controller is mostly tested, the return values aren't tested but
   what is saved to the database is.

Conflicts:
    DDDEastAnglia/App_Start/BundleConfig.cs
    DDDEastAnglia/Content/Site.css