Tab names of modals not vertically centered
Steps to reproduce
The tabs names of a lot of modals are not vertically centered which looks weird.
Likely others, too.
The reason is that for some languages, the tab names are taking up two lines. In that case, the tab names are centered.
It should, however, be implemented correctly for single-line tab titles, too.
Jan Koppe (WWU Münster) has resolved this issue.