[1.2.X] Fixed #15291 -- Corrected alignment issue when actions are disabled in...

[1.2.X] Fixed #15291 -- Corrected alignment issue when actions are disabled in a ModelAdmin. Thanks to Julien Phalip for the report and patch.

Backport of r15573 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@15577 bcc190cf-cafb-0310-a4f2-bffc1f526a37