eventtype badge visual fixes

[felixrindt]

Create a new eventtype with a long title and you'll see visual glitches on the homepage and the event list, esp. on small screens.
This doesn't make it perfect, but it is an improvement I would say. Please try various event type name lengths and various viewport widths.

• Close Event Title is not Clickable #1220
• check external event list

[coveralls]

coverage: 84.87% (-0.02%) from 84.885%
when pulling c981d2b on eventtype-badge-maxwidth
into 62442ca on main.

[jeriox]

don't like this

(you could implement #1220) to mitigate this as it only happens at the first breakpoint where the button is shown :D