[FIX] Attempting to find documents similar to a document excluded from the index causes errors

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@46537 b456876b-0849-0410-b77d-98878d47e9d5
[ENH] Use the normal redirect procedure

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@46538 b456876b-0849-0410-b77d-98878d47e9d5