Merge pull request #1 from ghing/7.x-1.x

First pass at content types
Merge pull request #2 from ghing/7.x-1.x

Full fields, roles and (OG) permissions for business models
Stubs and initialization for tests for custom type permissions

This doesn't currently work as there are errors when trying to enable
the ``onboard_types`` feature in the test case class' ``setUp()``
method.

Addresses #3484