Allow more app symbols to be shown in the top bar of the new app menu

Hello,

the new app menu in NC 12 is nice, but it would be great if more app icons could be shown in the horizontal pane at the top. Everybody has widescreen monitors on the desktop nowadays, so it is quite a bit of wasted space to show only 7 icons and a lot more in the drop down menu while a lot of space to the right is empty. For mobile users/small screens, as far as I see fewer symbols are already shown if mandadted by display width, so it already goes that way in the other direction.

I created a bug report here:

Fixed for v13 with https://github.com/nextcloud/server/pull/5135