That would be translating bbPress, and you’d need two things: Poedit and The bbPress POT file from your version.
You’d want to make “new from POT”, then save it as de.
Find the things you want to translate and put the translations in for them, then save again, and upload the de.mo to your forum’s my-languages folder. If it doesn’t already have one, make one.
Then, in your bb-config.php, set BB_LANG to de, and you’re done!
For dutch, better save it as nl and set BB_LANG to nl… 
(de is german)
Isn’t the problem, that these three can’t really be translated using the .pot file available? I’ve tried to make a Danish translation, and I’m having problems with these as well.
My problem is that the entire sentence is translated ok the only word that is still in english is ‘days’ or ‘day’ and I don’t know from what file or how to translate it.
Does it have to do with date/time formatting ?
Please help
