Abstracted the JavaScript POST submits in to separate steps per system.
Refactor: rename AuthnRequestFactory->createFromEntityDescriptor to createForRequestFromTo($sp, $idp)
Bugfix: do cleanup before a new Scenario
Improve debugging output for POST messages in Container.
Bugfix: improve reliability by explicitly saving the mock registries to disk after modifications instead of waiting for the __destruct.
Refactored general AbstractMockEntityRole out of MockIdentityProvider and MockServiceProvider
Added support for using the login-post url
Refactored some phpDoc
Added support for signing
Converted https://wiki.surfnet.nl/display/conextdocumentation/Error+messages+in+Engine into Scenarios