I have updated the beta (and Transifex source), and all the items quoted above should be fixed.
I could not reproduce this. Can you try again with the new beta and let me know if this is still an issue.
Perhaps, but it seems to me it'd look silly if the header went beyond one line. Could the translation be shortened, for example "Vertaa kalenterin "yhteenveto" -kenttään" etc.? Differing opinions are of course welcome on that, and it shouldn't be hard to allow header to be several lines - just seems messy to me.
Anyway, this is the only translation I can really comment on, and it seems superb. I was really struggling when I tried to do finnish translation, but everything here just seems natural and flows well. Thank you.