[glade] (28 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:

  efca52f... Allow to specify placeholder to GtkListBox
  2e22e05... Remove added widgets if placeholder is disabled

Commits added to the branch:

  a77a6e9... Update Romanian translation (*)
  e826a25... Update Romanian translation (*)
  a82d4c0... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeEditorTable (*)
  5b8a5a4... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeEditorSkelet (*)
  dfe28ac... Updated Czech translation (*)
  736039f... Updated Czech translation (*)
  d98f488... Update Romanian translation (*)
  7ccfe7f... Updated Lithuanian translation (*)
  1fa027e... Update Polish translation (*)
  1b1ffac... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeAdaptorChoos (*)
  df6d47f... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeApp (*)
  567f885... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeBaseEditor (*)
  138dcbc... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeCellRenderer (*)
  e80c486... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeClipboard (*)
  dd8bbc1... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeCommand (*)
  847c50d... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeDesignLayout (*)
  f5f5001... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeDesignView (*)
  80283c9... gladeui: Use G_DECLARE_INTERFACE for GladeDrag (*)
  2b84518... gladeui: Use G_DECLARE_INTERFACE for GladeEditable (*)
  2694a8f... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeEditor (*)
  d7a2af1... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeEditorProper (*)
  b3af287... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeInspector (*)
  c2d0735... gladeui: Use G_DECLARE_DERIVABLE_TYPE for GladeNamedIconCho (*)
  e5f9670... gladeui: Use G_DECLARE_FINAL_TYPE for GladeObjectStub (*)
  12c3fc1... gladeui: Replace the last occurences of GladeWidgetClass wi (*)
  08fe366... Make it easier to track GladeXML elements and be GObject In (*)
  18dee8f... Allow to specify placeholder to GtkListBox
  ea45a0e... Remove added widgets if placeholder is disabled

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