Add inactive removal to cron

Author: soest

cron_schedule

@@ -1,4 +1,5 @@
 0 0 * * * cd /opt/s1/S1 && python manage.py collect_signups
 0 0 14 * * cd /opt/s1/S1 && python manage.py inform_renewal
 * * * * * cd /opt/s1/S1 && python manage.py moodle_api
-0 0 * * 0 cd /opt/s1/S1 && python manage.py module_cleanup
+0 0 * * 0 cd /opt/s1/S1 && python manage.py module_cleanup
+0 0 1 * * cd /opt/s1/S1 && python manage.py remove_inactive