Improvements and bug fixes

We made several improvements across the app.

Booking searches are now case-insensitive. That means searching for "lucas" or "Lucas" will result in the same results.
Creating multiple date overrides is now easier, because the time you enter for 1 date will automatically carry over to the other dates, which means less mouse clicks.
The "Mark conflict as resolved" button now has a loading state. This button lets you manually clear double-bookings.