Update 1.5 release notes a bit
Update 1.5 release notes a bit

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