MP2-443: Make the ImporterWorkerNewGen respect newly added MIAs on refresh imports on the MP2 Server side.
Caution: MP2 Client solution does not compile, yet, due to changes to IMediaBrowsing that are not yet implemented for the MP2 Client
MP2-443: Implemented the MP2 Client side of GetAllManagedMediaItemAspectCreationDates, in particular transfer via UPnP