1) not sure how to provide more… the .po (and .mo) file we provide on our translation site http://glotpress.simple-press.com do indeed include those strings… and they seem to have proper localization in place…
2) oh, I see now… hmmm… gonna have to think and consult Andy on this one… those are actually the tinymce js translations… not sure how we can add to those, even though they are technically our strings…
3) ah, yes… different string than you originally posted… and it is what I mentioned… wp is rejecting the email… so on forum – options – email settings, what do you have listed in the report post email list?