Editor: Partial sorting in info tables
Order matters for info records, but only within the group of records that belong to the same topic (dialogue record). Currently sorting in info tables (via click on header) is completely disabled. This should be re-enabled in a way that the order within the group of info records for each topic stays unchanged.
(RM-928 from redmine: created on 2013-11-04 by Marc Zinnschlag, , closed on 2015-06-18 by Stanislav Bas, blocks #926 (closed))