Accept in-event contributions

✨ Features & Improvements
- 💕 Attendees can now contribute funds right within your event
- 📧 Improved host email verification process
🐞 Fixes
- Fixed a bug that caused the browser to crash when selecting a file in the Slides & Docs Module
- Fixed an issue where some viewers had to refresh to see the event play
- Identified and fixed an outlet that allowed "anonymous" users