[lightsoff] Created tag 3.31.1

[Robert Roth <robertroth src gnome org>]

The unsigned tag '3.31.1' was created.

Tagger: Robert Roth <robert roth off gmail com>
Date: 1539033651 +0300

    Tagged release 3.31.1

Changes since the last tag '3.30.0':

Balázs Úr (1):
      Update Hungarian translation

Efstathios Iosifidis (1):
      Update Greek translation

Kalev Lember (1):
      Fix the name of the symbolic icon

Robert Roth (5):
      Migrate from appmenu to in-app menu (#8)
      Code cleanup after appmenu removal (#8)
      Moved headerbar puzzle selectors to menu (#8)
      Fixed accelerators (#8)
      Prepared release 3.31.1

Stas Solovey (1):
      Update Russian translation

Марко Костић (1):
      Update Serbian translation