[FIX] Mapping would be forgotten due to un-necessary filtering

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@51736 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] cart: Special escaping of single quotes for ajax parameters

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@51738 b456876b-0849-0410-b77d-98878d47e9d5