rename tag: don't need to check for scimoz existence, as all
"editor" views must define a scimoz

(integrated from komodo (trunk) change 81159 by toddw)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13336 b87d16e7-d29f-4ee1-b5ec-817d645d335f