pinned settings lables are not right on systems migrated from 5.x

if a system has been migrated then pinned settings shortcuts display things like LBL_USER_DESCRIPTION rather than the translated text.

this is because the vtiger_settings_field linkto column is in the form index.php?module=ModuleManager&parent=Settings&view=List&block=2&fieldid=8 rather than index.php?module=Users&parent=Settings&view=List as it is on new systems. The migration script should update these so when it parses the module out of the URL it gets the language strings from the right file.