webapi fixes
Merge branch 'webapi' of github.com:DanielDar/ravendb into webapi
change new HttpResponseMessage uses to GetEmptyMessage
More GetEmptyMessage Fixes
Add MultiGetContent to the UseBufferStream check
Merge branch 'webapi' of https://github.com/damianh/ravendb into webapi
Merge branch 'webapi' of https://github.com/damianh/ravendb into webapi
Fixing authorization with webapi
Merge branch 'webapi' of github.com:DanielDar/ravendb into webapi

Conflicts:
	Raven.Database/AppBuilderExtensions.cs