move wei script to wei app

See merge request !79

Transfer front

See merge request !76

# Conflicts:
#   apps/activity/views.py
#   apps/permission/backends.py
#   locale/de/LC_MESSAGES/django.po
#   locale/fr/LC_MESSAGES/django.po
#   static/js/base.js
#   templates/base.html
#   templates/member/user_list.html

WEI

Closes #32 and #33

See merge request !78

Add a public rights page to view which permissions are granted to which role, update Font Awesome to 5.13