CopyService generalization.

Make the service operation agnostic, so we can also move delete operations to it.
In a followup change we'll see about adding support for multiple concurrent
    operations. We'll need to evaluate how to do this in IntentService (which
    serializes requests....a major limitation).

Change-Id: I03eca9c1ecaba519af42d88edffeb0dce78bd1da
13 files changed