First step in conversion to the Pelix API

The Java Remote Services implementation must mimic Pelix's one
Step 2: Imported Endpoints registry
New implementation of the Jabsorb-RPC Exporter/Importer
Correction of the API
Cleaned up the "jsonrpc"/jabsorb-rcp provider
Added missing iPOJO decorators
Simplified the EndpointDescription bean
Basic correction of the multicast discovery

Now, it compiles...
Cleaned up RS Core
Added an ExportEndpoint.toMap() method
Added a Framework UID property constant
Updated the Multicast discovery bundle with the new API
Clean up unused interfaces
Created project org.cohorte.remote.dispatcher.servlet
Removed the old repository
Cleaned up unused classes
Small refactoring

ExportDispatcher and ImportsRegistry are in the same package now
Renamed mutlicast broadcaster -> discovery
Moved grabEndpoint to the dispatcher servlet

Also removed a useless manifest
Removed iPOJO Nature from dispatcher servlet project

Was creating a useless manifest file