[gtk] (30 commits) Non-fast-forward update to branch wip/layout-manager

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'wip/layout-manager' 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:

  87975be... Add GtkLayoutManager
  ba0ab41... Hook GtkLayoutManager into GtkWidget
  7677e6a... Add GtkWidget:layout-manager
  2fd9035... Rename the internal GtkLayoutChild type
  65d4a2c... Add GtkLayoutChild
  14c5e50... Add GtkBoxLayout
  cbc7289... Port GtkBox to GtkBoxLayout
  427aec5... docs: Add chapter on layout managers
  02ea541... Add GtkLegacyLayout

Commits added to the branch:

  f60ca91... A few forgotten button box functions (*)
  33ac41b... infobar: Remove an unused variable (*)
  1674b6e... main: Prefer implicit grab widget to target widget for moti (*)
  9d95008... inspector: Remove window icon (*)
  51268f5... docs: Remove reference to deleted file (*)
  721e598... Reduce includes of gtkinvisible.h (*)
  aad4499... filechoosernativeportal: Stop using an invisible (*)
  785373c... printoperation-win32: Stop using an invisible (*)
  3260a60... Update POTFILES.in and POTFILES.skip (*)
  4fbf10f... Update Hungarian translation (*)
  28044aa... Update Hungarian translation (*)
  a75dcce... Make the invisible invisible (*)
  e91144f... Make GtkInvisible private (*)
  dbc4298... Merge branch 'less-invisible' into 'master' (*)
  d2d35e5... Adjust some more pkg-config references for gtk+ to gtk rena (*)
  45361e1... Rename more GSources to use `gtk` (*)
  1668496... docs: Fix GTK links and locations (*)
  22f073b... docs: Fix references to pkg-config files (*)
  61fbd5b... tests: Fix comment for accuracy (*)
  5a0eea8... docs: Fix project name for translators (*)
  b56c0fb... Rename project files (*)
  c3d716d... Add GtkLayoutManager
  43ce16a... Hook GtkLayoutManager into GtkWidget
  aeb5224... Add GtkWidget:layout-manager
  68e9a39... Rename the internal GtkLayoutChild type
  85d921f... Add GtkLayoutChild
  ded37e5... Add GtkBoxLayout
  ad78434... Port GtkBox to GtkBoxLayout
  67d4fa4... docs: Add chapter on layout managers
  44cc7bf... Add GtkLegacyLayout

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