[fp/r51183][FIX] Make it possible to edit the redirect plugin in wysiwyg
Do not redirect if the page is being edited.
Commit to "right branch". Thanks jonnyb

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@51184 b456876b-0849-0410-b77d-98878d47e9d5