Owin: Add test to ensure UseRavenDB doesn't throw if host doesn't support OnAppDisposing.
Remove unused property
Remove unused properties on IServerThingsForTests
IServerThingsForTests: add issue link to //TODOs
Remove unused private member.
RavenDBOption: add ctor guard
Invoke HttpEndpointRegistration in RavenDBOptions
fix NRE
deal with contenttype with charset
fix from where we take the headers