Go through data exports and ensure none of them are public (fix them into function calls if they are)

At the moment we've turned off paging of Qt because it crashes when data is exported. We need to make sure that we can turn it on later and still remain binary compatible. Therefore we need to check the current list of exported data to make sure they are not public symbols. For the public ones we find (if any) we have got to make access to them into function calls, the others we do later.

See related tasks.