[FIX] recaptcha: Use https as suggested by marclaporte (thanks) and don't bother trying to include the file in the ajax return as that doesn't work (hence having to add it in setup)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/11.x@47361 b456876b-0849-0410-b77d-98878d47e9d5