4teamwork/opengever.ogds.models — pull request #24 by phgross (2014-10-07 11:39:07+00:00)
Title: Add `abbreviation` column to admin_unit table.

Used in the reference number generation by `opengever.core`.

The corresponding upgradestep is included in the PR in `opengever.core`

@deiferni please have a look ...