Updating Nancy version
Refactoring a few things

Removing Kayak adapter
Avoiding extension methods to fix sources pkgs
Breaking Gate's IAppBuilder extensions into another library

Enables Gate to avoid an IAppBuilder reference
Which means Gate.Sources adds zero references when used
Putting extension methods into Owin namespace
Fixing nancy adapter packaging
switching nancy to use extensions by source
Merge branch 'master' of https://github.com/owin/gate

Conflicts:
	src/Main/Gate.Middleware/CascadeMiddleware.cs
	src/Main/Gate.Middleware/ChunkedMiddleware.cs
	src/Main/Gate.Middleware/ContentTypeMiddleware.cs
	src/Main/Gate.Middleware/Gate.Middleware.csproj
	src/Main/Gate.Middleware/PassiveValidatorMiddleware.cs
	src/Main/Gate.Middleware/RequestLoggerMiddleware.cs
	src/Main/Gate.Middleware/RequestTracerMiddleware.cs
	src/Main/Gate.Middleware/ShowExceptionsMiddleware.cs
	src/Main/Gate.Middleware/WebSockets/WebSocketMiddleware.cs
Merge branch 'master' of https://github.com/loudej/gate