[gnome-software] Created tag 3.28.0

[Kalev Lember <klember src gnome org>]

The signed tag '3.28.0' was created.

Tagger: Kalev Lember <klember redhat com>
Date: 1520897973 +0100

    ==== Version 3.28.0 ====

Changes since the last tag '3.27.92':

Alan Mortensen (1):
      Updated Danish translation

Aman Alam (2):
      Update Punjabi translation
      Update Punjabi translation

Anders Jonsson (1):
      Update Swedish translation

Daniel Mustieles (1):
      Updated Spanish translation

Daniel Șerbănescu (1):
      Update Romanian translation

Emin Tufan Çetin (1):
      Update Turkish translation

Fabio Tomat (1):
      Update Friulian translation

Felix Häcker (1):
      gtk-style.css: Add border radius to featured-tile

Gianvito Cavasoli (1):
      Update Italian translation

Jan Tojnar (1):
      build: fix undeclared dependency on gio-unix-2.0

Joaquim Rocha (1):
      flatpak: Fix aborting getting the updates when an extension is broken

Jordi Mas (1):
      Update Catalan translation

Kalev Lember (10):
      trivial: Post release version bump
      trivial: Fix a comment
      loading page: Make errors from initial refresh() show up as events
      repos dialog: Show errors as shell events
      Fix in-app notification close button alignment
      trivial: flatpak: Don't return NULL from a gboolean return value function
      shell: Show detailed messages for download failed errors
      Revert "flatpak: Stop refreshing the updates page after every update"
      Revert "flatpak: Use "list of related apps for install" when updating an app"
      Release version 3.28.0

Kukuh Syafaat (1):
      Update Indonesian translation

Muhammet Kara (1):
      Update Turkish translation

Robert Ancell (3):
      Fix purchasing not working after authentication
      snap: Launch command line snaps with 'snap run'.
      snap: Fix invalid metadata after cancelled refine

sujiniku (2):
      Update Japanese translation
      Update Japanese translation

Марко Костић (1):
      Update Serbian translation

Милош Поповић (1):
      Update Serbian Latin translation