Install django_cron

https://github.com/Tivix/django-cron.git
Setup Cron
Merge branch 'scheduler'
Setup Cron
Revert "Merge branch 'scheduler'"

This reverts commit cc6286999d116cd8927c9c8767f082c918cea342, reversing
changes made to 6372f5a7c185cb664a60d85ac6de1225a2101b55.
Merge branch 'scheduler'
Merge branch 'master' of https://github.com/kanade123321/dmhy-catcher-python