Automatic emails from reviewers have german lanague link :)

[Juraj-Masiar]

Describe the problem and steps to reproduce it:

What happened?

Page opens in German :)

What did you expect to happen?

The language part should not be there at all, that way browser will load locally set language.

[MelissaAutumn]

This is most likely because the reviewer has their locale set to de. To fix this we'll need to remove locale code from the reverse() call from notify_about_activity_log -> Addons.models.get_dev_url.