[plt-translators] english-string-constants.ss update

"Robby Findler" <robby at cs.uchicago.edu> writes:

> Please wait before translating these. There may still be a few changes.

Robby, you also editing german-string-constants.ss makes it more work
for me to do the synch, as I have to check what you have and haven't
done.

-- 
Cheers =8-} Mike
Friede, Völkerverständigung und überhaupt blabla