I added few tooltips based on suggestions from this article, see patch

The added tooltips are helpful and probably we should add more so did not check into GIT yet. But I might have to fix the following one (smiley face!)

+ set_tooltip(_("Save to loaded EDL (highlighted), will *overwrite* nighlighted proj!"));

But apparently 'warn if proj/session mismatch' doesn't work as intended,
I'll try to look into it but no promise of solution.

I also slightly updated russian translation because long russian sentence about # of
CPU used by plugins was stomping away text in Use HW acceleration dropdown list!
..
You might apply it anyway,

Yes, I will apply.

I think some more ru translation work will be needed due to all those added strings
(a bit afraid to do it due to possibility of breackage - but there is no other way!)

I agree, have to keep moving forward despite potential errors.