[FIX][bp/53313] When Allow HTML is used on the page, some HTML could make its way into the search data as the parser would escape it, strip it first.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@53314 b456876b-0849-0410-b77d-98878d47e9d5