fix feincms cleanse function calls by converting them to instance methods
fix feincms cleanse function calls by converting them to instance methods

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