[FIX] null check and variable existance

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52110 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] prevent wikiLingo from overriding on save to default parser, and ensure outputType is obtained

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52111 b456876b-0849-0410-b77d-98878d47e9d5