[haddlyapis]

Hi there,
I want to add a third <li>message</li> to the form-user-register.php file to advise users that their user status will be set to “Spectator” until it is reviewed and approved to “Participant” status.
I will also need to add my translation to the bbpress-de_DE-formal.po file as my site is in German.
As I have my own unique theme in /wp-content/themes/unique_theme/, where do i place the form-user-register.php file in order to add my third <li>message</li>?
As I don’t want it overwritten next time bbpress updates.
The same question to the .po file as this also needs to be edited.
thx in advance.