[gtk/matthiasc/for-master] (25 commits) ...gtk-demo: Fix the settings demo

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  ecc6c25... Make gtk_file_chooser_get_filter work for portal case (*)
  6a13bbb... Merge branch 'michaelweghorn/master_issue1820_gtkfilechoose (*)
  37eb049... notebook: Don't capture clicks (*)
  1ca308a... Merge branch 'fix-notebook-tabs' into 'master' (*)
  342400d... paperdialog: Convert the printer combo (*)
  c4215a2... pagesetupdialog: Drop the Private struct (*)
  990a87f... printdialog: Convert some leftover code (*)
  687da2c... text: Drop unused includes (*)
  c8843d0... fontchooser: Drop unused includes (*)
  ab50d20... Merge branch 'printer-combo-conversion' into 'master' (*)
  6255bd6... Updated Spanish translation (*)
  2cc39fe... Updated Spanish translation (*)
  9b363a6... Merge branch 'benzea/fix-css-update' into 'gtk-3-24' (*)
  7c1cf77... gdk: Drop gdk_device_get_axis_value leftovers (*)
  dd6174c... Merge branch 'cherry-pick-947c3e9f' into 'master' (*)
  8dbe9e9... Merge branch 'wip/ricotz/cleanup' into 'master' (*)
  d2cfe9f... Update POTFILES.in (*)
  d468ea3... quartz: added open capability to gtk_application (*)
  2a9c92f... Drop unused includes (*)
  25c2059... pagesetupdialog: Port the papersize combo (*)
  5bcb01e... pagesetupdialog: Convert the printer combo (*)
  019f4b6... Adwaita: dropdown styling (*)
  de729e9... Merge branch 'wip/jimmac/dropdown-styling' into 'master' (*)
  985ba83... Merge branch 'page-setup-combos' into 'master' (*)
  81d16c5... gtk-demo: Fix the settings demo

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