FIX frontend_editing error introduced in dd087a9af2166cc942f4c80cd7c0cfd172440f71
FIX frontend_editing error introduced in dd087a9af2166cc942f4c80cd7c0cfd172440f71

cookie `frontend_editing` is set only user has permission

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