[epiphany] (14 commits) ...find-toolbar: Remove a redundant show_all() call

[Marge Bot <marge-bot src gnome org>]

Summary of changes:

  dd09be3... meson: Drop gdk dep (*)
  aaa185e... lib: Drop EggTreeMultiDnd (*)
  65c18a8... notification: Mark properties as readwrite (*)
  7608ba1... notification: Don't set GtkGrid properties (*)
  1adf4af... notification: Stop subclassing GtkFrame (*)
  e66d7ed... notification: Use a signal for closing (*)
  442bfac... notification-container: Make get_num_children() private (*)
  96501bb... notification-container: Don't subclass GtkRevealer (*)
  cd22d11... notification-cotnainer: Use GtkBox instead of GtkGrid (*)
  91f5280... embed: Inline EphyEmbedEvent (*)
  fab77de... find-toolbar: Don't subclass HdySearchBar (*)
  74f3a10... find-toolbar: Remove a useless size group (*)
  cc0102d... find-toolbar: Stop setting max-size on the entry (*)
  be37627... find-toolbar: Remove a redundant show_all() call (*)

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