volatile-media - do not mount /media if allready mounted.
the last one hides the first one and all his content.
so mount /media only if it's not yet mounted.
Merge remote-tracking branch 'Alliance/2.3' into 2.3

* Alliance/2.3:
  volatile-media - do not mount /media if allready mounted. the last one hides the first one and all his content. so mount /media only if it's not yet mounted.