4teamwork/opengever.core — pull request #291 by phgross (2014-06-16 08:31:57+00:00)
Title: Rework label generation for all actors.

* Introduce Actor representation for all possible actors(User, Contact, Inboxes)
* Replace `IContactInformation.describe` with actor lookup.

@deiferni please take a look and extend the PR description when its necessary.