Item editor: Always allow deletion of CTs that where just added but not yet saved.
Remove leftover commented out line from c81b170
Fix #424: feincms_render_(content|region) do not require the request anymore
Merge remote-tracking branch 'mk/next' into next

* mk/next:
  Always process the Page.redirect_to field in the admin form
  Section content default template: Stop showing non-existent mediafiles as None