I'm on django 1.9.5 and I can't access admin panel for user because django admin crashes on template render.
It seems that it reverses _('users') into "użytkownicy", and then crashes when rendering template "django/contrib/admin/templates/admin/change_list.html" on line 91 ("{% result_list cl %}") with error:
UnicodeDecodeError at /admin/discounts/user/
'ascii' codec can't decode byte 0xc5 in position 1: ordinal not in range(128)
Unicode error hint
The string that could not be encoded/decoded was: u��ytko