Argument depedency for summary is broken

See attached screenshot.

The root of the problem was found via git bisect:

 git bisect good
cb1991063a7cbe2c2dc84097c1b008107220312e is the first bad commit
commit cb1991063a7cbe2c2dc84097c1b008107220312e
Author: Daniel Wehner <daniel.wehner@erdfisch.de>
Date:   Fri Dec 16 00:27:11 2011 +0100

    #1297456 by tim.plunkett: Let all plugins call it's parent options_forms

:040000 040000 9bef338bbd62a887b53127a00112ce2c193048c7 c3ff9462624ed86bfd2da5203c4e6cb8b3900419 M      plugins