feat: add user search/filter, banned metric, mobile review API, event detail improvements

- admin_api/views.py: Add banned count to UserMetrics, fix server-side search/filter in UserListView
- admin_api/models.py: Add ReviewInteraction model, display_name/is_verified/helpful_count/flag_count to Review
- mobile_api/views/reviews.py: Customer-facing review submit/list/helpful/flag endpoints
- mobile_api/urls.py: Wire review API routes
- mobile_api/views/events.py: Event detail and listing improvements
- Security hardening across API modules

mobile_api/views/user.py

@@ -97,7 +97,7 @@ class LoginView(View):
                     'place': user.place,
                     'latitude': user.latitude,
                     'longitude': user.longitude,
-                    'profile_photo': request.build_absolute_uri(user.profile_picture.url) if user.profile_picture else ''
+                    'profile_photo': user.profile_picture.url if user.profile_picture else ''
                 }
                 print('4')
                 print(response)