Remove the old way of calculating attendance, replacing it with an SQL query and using the Attendence class. (This also fixes the 'Previous events' - 'Attendance rate' not working on the overview in the admin dashboard.
Add a progress bar for scanned tickets on the events' overview page.
Fix the styling of the progress bars so that the text in the bar is visible.
This PR does the following:
Attendence
class. (This also fixes the 'Previous events' - 'Attendance rate' not working on the overview in the admin dashboard.it looks like this: