Ref #207 - Remove redundant usages of actstream package as requested …

…by PR review

- Remove it from apps and requirements.txt
- Remove method using activity stream from app configs

backend/app/settings.py

@@ -43,20 +43,11 @@
     'eventposts',
     'profiles',
     'corsheaders',
-    'frontend',
-    'actstream',
+    'frontend'
 ]
 
 SITE_ID = 1
 
-ACTSTREAM_SETTINGS = {
-    'MANAGER': 'actstream.managers.ActionManager',
-    'FETCH_RELATIONS': True,
-    'USE_PREFETCH': True,
-    'USE_JSONFIELD': False,
-    'GFK_FETCH_DEPTH': 0,
-}
-
 MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',

backend/authentication/apps.py

@@ -3,7 +3,4 @@
 
 class AuthenticationConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
-    name = 'authentication'
-    def ready(self):
-        from actstream import registry
-        registry.register(self.get_model('User'))
+    name = 'authentication'

backend/eventposts/apps.py

@@ -3,7 +3,4 @@
 
 class EventpostsConfig(AppConfig):
     default_auto_field = 'django.db.models.BigAutoField'
-    name = 'eventposts'
-    def ready(self):
-        from actstream import registry
-        registry.register(self.get_model('EventPost'))
+    name = 'eventposts'

backend/requirements.txt

@@ -5,5 +5,4 @@ djangorestframework==3.12.4
 djangorestframework-jsonapi
 djangorestframework-simplejwt==5.0.0
 django_rest_passwordreset
-django-cors-headers
-django-activity-stream
+django-cors-headers