Merge branch 'chiaki_dev' into zemal_dev

* chiaki_dev:
  fix ci
  Add submission module

# Conflicts:
#	requirements.txt

submission/tasks.py

@@ -0,0 +1,7 @@
+from celery import shared_task
+from judge.tasks import JudgeDispatcher
+
+
+@shared_task
+def _judge(submission_obj, problem_obj):
+    return JudgeDispatcher(submission_obj, problem_obj).judge()