Size the event editor dialog's height to use available space more aggressively and avoid scrolling
In the same spirit as issue #89 (which still occurs in 3.36.1), the event editor should try a bit harder to use my screen's available height to avoid scrolling until it becomes necessary (ex: when unfolding the date fields). This is what it looks like on one of my screens, with the Droid fonts and font scaling at 90%, and you can see the scrollbar even if there would be plenty of space to fit the dialog's default state: