Stopped MRBS sending an email when nothing has been deleted

git-svn-id: http://svn.code.sf.net/p/mrbs/code/mrbs/branches/create_policy@2878 25f7e783-145e-4f2d-a9f8-dd7182bfe9c7
Fixed undefined variable problem

git-svn-id: http://svn.code.sf.net/p/mrbs/code/mrbs/branches/create_policy@2879 25f7e783-145e-4f2d-a9f8-dd7182bfe9c7