Add watchdog to check for file changes in flatdb. Add username to the file being written in flatdb. Update requirements

- Include watchdog integration to monitor dir changes
- Update requirements and comment prints
- File write and logic fix. Responds to file change
- Properly initiate while loop, include debug info
- Finalize change loop
- Fix variable confusion in index route
- Fix variables
- Update documentation
- Fix comment
- Add username to file name