[gnome-sdk-images] (15 commits) Non-fast-forward update to branch wip/hughsie/appdata-fixes

[Michael Catanzaro <mcatanzaro src gnome org>]

The branch 'wip/hughsie/appdata-fixes' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  acf1024... trivial: Add <description> to the AppData files

Commits added to the branch:

  0345706... Don't load Sdk extensions in the Platform (*)
  a92b834... enchant: Take the config files from the new path (*)
  3fb3be4... Update IBus to its latest release (*)
  d0e916a... Update Cantarell to the same version as 3.28 (*)
  6cddad9... Change the Freedesktop-sdk runtime version to 18.08 (*)
  669ece8... Revert "Change the Freedesktop-sdk runtime version to 18.08 (*)
  8245e8b... Revert "Revert "Change the Freedesktop-sdk runtime version  (*)
  ba4d255... Upgrade to the Gtk 3.24 branch (*)
  c663fc0... Dconf: disable bash completions (*)
  9096720... dconf: Fix option usage (*)
  b1a87e2... pycairo: update to 1.17.1 (*)
  688962b... pycairo: Build with meson (*)
  8b39aae... Update to WebKitGTK+ 2.21.91 (*)
  4481962... Rename the ffmpeg extension (*)
  57efe67... trivial: Add <description> to the AppData files

(*) This commit already existed in another branch; no separate mail sent