Refs #232 - Add makemigrations to workflow

.github/workflows/webapp.yml

@@ -40,6 +40,9 @@ jobs:
         pip install -r requirements.txt
         pip install pytest-django
     - name: Run migrations
-      run: python manage.py migrate
+      run: |
+        python manage.py makemigrations authentication
+        python manage.py makemigrations eventposts
+        python manage.py migrate
     - name: Run tests
       run: py.test