Collect static files before running tests

Signed-off-by: Michal Čihař <michal@cihar.com>

.scrutinizer.yml

@@ -19,6 +19,8 @@ build:
             - pip install -r ci/requirements-scrutinizer.txt
     tests:
         override:
+            -
+                command: ./manage.py collectstatic
             -
                 command: coverage run --source . ./manage.py test --settings=weblate.settings_test
                 coverage: