Fixed an incorrect optional in RoomPollInfo
Fixed an incorrect parameter name in the ClosedGroupRequestBody
Fixed a crash due to a change in the ContactUtilities
Cleaned up the duplicate code in the OnionRequestAPI, HTTP and SnodeAPI to all use 'Data' response types
Updated the SnodeAPI to casting types to Any (made it hard to catch breaking changes with HTTP and OnionRequestAPI)
Got the updated blinding logic working (at least when authenticating a request - still need to deal with message signing and verification)
Storing the server capabilities in the database now so we can correctly blind requests based on them
Renamed the remaining 'v2' functions and classes to just be 'OpenGroup' since there isn't a 'V2' anymore
Cleaned up a few TODOs and functions