Merge branch 'statistics_migrate' into 'dev'

Statistics migrate

See merge request !446

lms/celery.py

@@ -25,7 +25,7 @@ app.conf.beat_schedule = {
         'task': 'finance.tasks.periodic_billing'
     },
     'statistic_teachers': {
-        'schedule': crontab(hour='16', minute='0'),
+        'schedule': crontab(minute='*/2'),
         'task': 'progress.tasks.statistic_teachers'
     }
 }

progress/tasks.py

@@ -41,7 +41,7 @@ def add_next_lesson(progress):
 def statistic_teachers():
     file_dir = "%s/analytics/teachers/" % (settings.MEDIA_ROOT,)
     os.makedirs(os.path.dirname(file_dir), exist_ok=True)
-    path = '%s%s' % (file_dir, timezone.now().strftime('%Y-%m-%d__%H-%M'))
+    path = '%s%s.csv' % (file_dir, timezone.now().strftime('%Y-%m-%d__%H-%M'))
 
     progresses = ProgressLesson.objects.filter(status='wait')