I added a new toggle so users can disable ICS generation. The functionality is off by default, tho users can manually enable it in the settings. Existing users will still have it on.

QOL things:

• Change email change rate limit message
• Styling issues
• ICS generation now runs in another thread (api route)
• fix: Busiest day off by one
• Made more things use the local user timezone instead of the browser one
• fix animation not showing up on ‘regenerate calendar links’ popup