comply with pipeline functionality

Updated WBIRDemo to new RegistrationMethodv4 Component

functionality. Removed various filereading/writing from Overlord

Changed Commandline to request AnyFileWriters from SuperElastixFilter

with Bug ElastixFilter->GetParameterObject() solved.

Temporary solution until the Overlord is an ItkFilter

directly an itkImage.
This is useful for bypassing the itkpipeline mechanism. (As for
elastixfilter currently). If the itkpipeline is bypassed, the (update)
control flow must be handed over to the Overlord. This is done via the
AfterRegistration mechanism in Overlord.

ENH: reorganized Sink and Souce file structure

Containers

added RunRegistrationInterface