Notification count misplaced on some screen sizes

[MrKrisKrisu]

Describe the bug Since the Vue-Update (#1665) the badge with the numbers of notifications isn't placed correctly in some screen wides. The following screenshot is taken at 811px * 948px.

Screenshots

[HerrLevin]

Hmpf. I'm too bad for CSS. :(

[pascalwittler]

A simple pure-css solution is to add

white-space: nowrap;

to the <button> element to avoid the line break between the two included <span> elements (bell icon + notification count badge)