Editor: hide script error list when there are no errors
Please add an option (or do it by default) to hide the script error list when there are no errors. The list takes up almost half of the available view, which is counter-productive when all I need to do is inspect script texts. Every time I open a new script, I need to manually hide the script error list just to get a reasonable viewport.
(RM-2867 from redmine: created on 2015-08-16 by scrawl ., , closed on 2015-11-21 by Marc Zinnschlag, relates #2996 (closed))