Turn elmah db logging off by default
Updated to latest signalr and install perf counters on azure role start.
Updated to the latest SignalR client.
Updated jabbr to latest signalr.
Updated to the latest from the release branch.
Updated to latest SignalR dev
Removed EnableJavaScriptProxies setting
Updated to SignalR RTW candidate.
If the user has no clients mark them as offline.
Mark users with no clients as offline.
Updated the SignalR.Owin assembly.
Enable detailed errors.

Fixes #615
Initial changes to decouple JabbR from system.web
Removing ASP.NET dependency.
- Added middleware for proxying images and auth.
Ripping out janrain auth.
Changed default.aspx to default.cshtml.
Set the current directory so the static file middleware works.
Cleanup startup class by using partial classes.
Added sources to make restore work.
Updated to use the latest nuget.