rfe #1474 Text transformation combines Append and Prepend

Signed-off-by: Marc Delisle <marc@infomarc.info>
Fix test for new transformation

Signed-off-by: Marc Delisle <marc@infomarc.info>
Update po files
ChangeLog entry for rfe 1474

Signed-off-by: Marc Delisle <marc@infomarc.info>
Remove unneeded transformation

Signed-off-by: Marc Delisle <marc@infomarc.info>