Sync members between Jive and ESP

Hey Lars Vornholt,

First of all, members are synced from Jive to the ESP and not vice versa.

This happens in a few different flows:

1. Container registration - the you get a list of ExStorageMembershipOperation as part of the ExStorageContainerRegistrationRequest and you're expected to return a list of ExStorageMembershipOperationResult as part of your response object.
2. As part of the container resources, you provide two resources:
   1. "members" that handles PUT and adds a single member.
      This endpoint is called when a user joins a group or a project of a group on Jive.
   2. "bulkMembership" that handles POST and deals with all sorts of membership operations.
      This endpoint is called when the permissions have changed for a space or a project of a space.
3. Each membership entity contains a "self" resource that handles PUT for permission updates and DELETE for membership removal.

Please tell me if you have any other questions, or perhaps need help with entity mapping in Java.