* Add support for timing out poll requests
- Default poll request is 110 seconds (like in previous versions of SignalR)
- Use 200 with a 0 content length for timeouts.
- Added support for not timing out while debugging
* convert to new protocol
* removed InvocationDescriptorRegistry because we're not yet sure about custom protocols
* update SocialWeather sample
* Moving ts client to using new protocol
* make the functional tests a little easier to run on ctrl-f5