Fixed seo extension reliability
Fixed seo extension reliability

It used to have some hard-coded assumptions about the model it was being
registered for. Now it conditionally updates the admin fieldsets only if
it finds the appropriate fieldset

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