Hi Ralf,
I am currently converting English help file texts into strings and at the same time shortening and simplifying them. David is responsible for making sure all the help popups work in 2.0 and for moving the help file texts in all other languages to the appropriate strings. Please see
MDL-21695 and
Development:Help strings for details of our work.
Thus, the answer to your question
Are help file information automatically added to the new strings? is yes.
Translators will be able to easily check and shorten the help strings in the new Moodle translation portal,
AMOS.
I'll leave your last question for David to answer.