Fix up lobby updating to push topic / closed changes through the same codepath as member count changes.  Simplify how clients get notified of topic changes.
push animation for lobby room updates to css
Updated to the latest SignalR
Fixed windows auth.
- Made the windows auth middleware run at the right point
 in the IIS pipeline.

#944
Fixed using
Merge pull request #976 from JabbR/improve-topics

Improve handling of room topic change (and associated minor refactoring)
Removed initialized check
Added extra ctor to JabbRClient
Better fit emoji
Merge branch 'dev' of https://github.com/JabbR/JabbR into dev

# By David Fowler (6) and cmaish (2)
# Via David Fowler
* 'dev' of https://github.com/JabbR/JabbR:
  Better fit emoji
  Added extra ctor to JabbRClient
  Removed initialized check
  Fixed using
  Fixed windows auth. - Made the windows auth middleware run at the right point  in the IIS pipeline.
  Updated to the latest SignalR
  push animation for lobby room updates to css
  Fix up lobby updating to push topic / closed changes through the same codepath as member count changes.  Simplify how clients get notified of topic changes.