Allow resources to specify the title of serialized links

Review Request #8139 — Created May 2, 2016 and submitted — Latest diff uploaded

Information

Djblets
release-0.10.x
d490e3c...

Reviewers

Instead of always returning the object's unicode representation as the
title, resource classes can now specify a get_object_title method to
specialize this behaviour.

Tested this with an upcoming Splat patch.