[glade] (9 commits) Non-fast-forward update to branch tintou/listbox-placeholder

[Alberto Fanjul <albfan src gnome org>]

The branch 'tintou/listbox-placeholder' 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:

  5f79e8d... Allow to specify placeholder to GtkListBox
  dd74eaf... Remove added widgets if placeholder is disabled

Commits added to the branch:

  283f286... Update French translation (*)
  8b610fc... Update Brazilian Portuguese translation (*)
  1ac86ac... Update Hungarian translation (*)
  4219ca1... gladeui: Plug tiny leak on Drag & Drop (*)
  6151630... gtk+: Keep internationalization context in Atk properties (*)
  f0a5390... gladeui: Modernize GladeWidgetAdaptor definition (*)
  c5d4c4e... gtk+: Add missing 3.22 enum/flag values (*)
  e85227b... Allow to specify placeholder to GtkListBox
  abc7565... Remove added widgets if placeholder is disabled

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