Projects model cleanup

[hlbmtc]

• Removed public figure type
• Removed Project.is_active

[sentry]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ TypeError: Field 'id' expected a number but got <django.contrib.auth.models.AnonymousUser object at 0x7f693e... /api/projects/topics/ View Issue
• ‼️ TypeError: Field 'id' expected a number but got <django.contrib.auth.models.AnonymousUser object at 0x7f693c... /api/projects/tournaments/{slug}/ View Issue

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