[gnome-shell] Created tag 3.21.91

[Florian Müllner <fmuellner src gnome org>]

The unsigned tag '3.21.91' was created.

Tagger: Florian Müllner <fmuellner gnome org>
Date: Tue Aug 30 01:16:49 2016 +0200

    Tag release 3.21.91

Changes since the last tag '3.21.90.1':

Andika Triwidada (1):
      Updated Indonesian translation

Daniel Mustieles (1):
      Updated Spanish translation

Dušan Kazik (1):
      Updated Slovak translation

Enrico Nicoletto (1):
      Updated Brazilian Portuguese translation

Fabio Tomat (1):
      Updated Friulian translation

Florian Müllner (1):
      Bump version to 3.21.91

Jiri Grönroos (1):
      Updated Finnish translation

Mario Blättermann (1):
      Updated German translation

Matej Urbančič (1):
      Updated Slovenian translation

Мирослав Николић (1):
      Updated Serbian translation