Run isort in CI

.circleci/config.yml

@@ -75,6 +75,7 @@ jobs:
           command: |
             . venv/bin/activate
             flake8 ./opentech
+            make sort
             python manage.py collectstatic --noinput --verbosity=0
             python manage.py check
             python manage.py makemigrations --check --noinput --verbosity=1

.travis.yml

@@ -50,6 +50,9 @@ script:
   # Run python code style checks
   - flake8 ./opentech
 
+  # Check import sort order of Python files
+  - make sort
+
   # Collect static
   - python manage.py collectstatic --noinput --verbosity=0