Merge branch 'design_by' into 'master'
authorMatthias Clasen <mclasen@redhat.com>
Fri, 15 Jun 2018 02:00:57 +0000 (02:00 +0000)
committerMatthias Clasen <mclasen@redhat.com>
Fri, 15 Jun 2018 02:00:57 +0000 (02:00 +0000)
aboutbox: use a more fitting 'design by" role

Closes #1153

See merge request GNOME/gtk!192


Trivial merge