Replace session to COOKIE for frontend_editing in tests too
Replace session to COOKIE for frontend_editing in tests too

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