Revert "FeinCMSModelAdmin breaks when using a custom model manager"
Revert "FeinCMSModelAdmin breaks when using a custom model manager"

This reverts commit 7399ad96ba6c0c367f08d427bcdf1a799dd03530.

nickburlett/feincms,nickburlett/feincms,michaelkuty/feincms,michaelkuty/feincms,matthiask/django-content-editor,michaelkuty/feincms,feincms/feincms,mjl/feincms,joshuajonah/feincms,matthiask/feincms2-content,joshuajonah/feincms,feincms/feincms,joshuajonah/feincms,matthiask/feincms2-content,michaelkuty/feincms,joshuajonah/feincms,nickburlett/feincms,matthiask/django-content-editor,matthiask/django-content-editor,mjl/feincms,matthiask/django-content-editor,feincms/feincms,mjl/feincms,matthiask/feincms2-content,nickburlett/feincms