[shotwell] (30 commits) Non-fast-forward update to branch wip/webp

[Jens Georg <jensgeorg src gnome org>]

The branch 'wip/webp' 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:

  82e3bca... wip: Initial webp support
  b55975b... wip: Actually decode WebP

Commits added to the branch:

  2eaeb63... Updated Serbian translation (*)
  9241488... Update Ukrainian translation (*)
  1544f59... Fix Spanish translation header (*)
  03bcc8b... Update Catalan translation (*)
  bf739e5... Update Hungarian translation (*)
  0adcf57... Update Croatian translation (*)
  e2df335... Update German translation (*)
  d5aa2a2... Save selection before setting the restore point (*)
  c03ea62... Update German translation (*)
  d42a829... Update Scottish Gaelic translation (*)
  5553bf0... Update Catalan translation (*)
  986bc37... Prepare 0.27.92 (*)
  1c0d3d0... Updated Danish translation (*)
  ecaf52c... Prepare 0.28.0 (*)
  a95773f... Update Latvian translation (*)
  62869fc... Fix undefined symbol error (*)
  b257de5... Post-release version bump for master (*)
  d801b44... Drop autotools (*)
  9c20c46... Drop enable- prefix from meson options (*)
  ab5db2f... build: Use LINGUAS file for help (*)
  47f22f5... Remove po/Makevars (*)
  a053827... Update Croatian translation (*)
  f1a117b... Updated Danish translation (*)
  b5dd17e... Revert "publishers: Properly escape urlencoded payload" (*)
  33582fb... saved search: Fix working with Gtk 3.18 (*)
  bf3aad1... Update Chinese (China) translation (*)
  4d5d745... Fix crash on editing images with alpha channel (*)
  35909de... Read-only static GIF support (*)
  8de9eeb... wip: Initial webp support
  3bba3db... wip: Actually decode WebP

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