[gtk] (29 commits) Non-fast-forward update to branch wip/baedert/for-master

[Matthias Clasen <matthiasc src gnome org>]

The branch 'wip/baedert/for-master' 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:

  0ccb5d0... fontchooser: Fix radio groups for features
  075b412... printdialog: Fix radio groups
  0e11eb0... printdialog: Make collate image smaller
  27c5eb9... widget-factory: Fix up radio buttons

Commits added to the branch:

  af15583... fontchooser: Fix radio groups for features
  830b2b7... printdialog: Fix radio groups
  d3042da... printdialog: Make collate image smaller
  e21b6a5... widget-factory: Fix up radio buttons
  7a05381... gtk-demo: Port to font explorer to grouped checkbuttons
  c9eb497... gtk-demo: Fix up the fontrendering demo
  151b9c7... printeroptionwidget: Stop using radio buttons
  d6e1276... mountoperation: Stop using radio buttons
  2d6c43b... checkbutton: Drop gtkradiobutton.h include
  00124b5... inspector: Drop gtkradiobutton.h include
  33b65d5... stackswitcher: Drop gtkradiobutton.h include
  f30d32f... pagesetupdialog: Drop gtkradiobutton.h include
  591b525... checkbutton: Fix clicking on the last group member
  cd284da... checkbutton: Reuse a helper function
  1b6f734... tests: Stop using radio buttons
  8f1bf59... Drop a long-dead test
  ba6070b... build: The doc shooter works without x11 now
  238d524... doc shooter: Drop radio buttons
  cfade23... docs: Update the gallery image for check buttons
  2c5c938... Clean up uses of gtk_toggle_button_get/set_active
  c7b6c2f... Remove GtkRadioButton references in the docs
  b69e8d8... Remove GtkRadioButton uses in ui files in tests
  28d7f49... togglebutton: Add grouping
  f085ac8... fontrendering demo: Stop using radio buttons
  1125a43... iconbrowser: Stop using radio buttons
  b98352d... widget-factory: Stop using radio buttons
  bb6045f... builder-tool: Replace radio buttons by check buttons
  17c4838... Drop GtkRadioButton
  cff211e... migration guide: Mention button hierarchy changes