title: cq: Remove cq:LiveRelationship mixin recursivly
body: <p>i've copied a complete Website within CQ.
  Now i have the mixin cq:LIveRelationship on every Site. I tried to detach it with the MultiSiteManager but it doesn't bring me the detach Option for this site.
  The only way to remove this Status is to detach the mixin for every site.
  Is there a possiblity to remove the mixin for a complete "Folder" recursive?</p>