fixes as requested by Aaron and Adam - no or invalid operator still chats, default to fallingplates on watchthinkchat.com

- No or invalid operator url should still connect you to chat: Example: http://www.watchthinkchat.com:5000/c/b646e6
- Default route for watchthinkchat.com: if a visitor goes to www.watchthinkchat.com with no query string, redirect them to the falling plates campaign (/c/whatever).  This will be just a temporary redirect for this month.
Merge branch 'master' of https://github.com/CruGlobal/godchat