Support MySQL 8.0

[javrasya]

Description:

Select and update the feature of Django sometimes doesn't work with MySQL. Those lines that are affected by this can be changed to the pythonic way of getting updated and saved individually since they are not too many items to support MySQL 8.0

Acceptance Criteria:

• Set up automated integration tests with MySQL 8.0
• Instead of using queryset.update(...), loop through the items in the query and update them one by one and save them.