[gtk] (22 commits) Non-fast-forward update to branch ci-flatpak

[Emmanuele Bassi <ebassi src gnome org>]

The branch 'ci-flatpak' 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:

  a7578fc... Add flatpak builder manifests for our demos
  3a1e2c7... ci: Add two flatpak jobs

Commits added to the branch:

  0ad27cc... x11/xi2: Report touchpads as TOUCHPAD, not MOUSE (*)
  bd986f9... gtkbuilder: add accessibility role declaration (*)
  9561b97... Fix some accessibility issues in demos (*)
  391727b... GdkWindow -> GdkSurface initial type rename (*)
  890080e... GdkWindow -> GdkSurface: File renames (*)
  9a7e721... GdkSurface: Rename various functions and variables (*)
  3dce0dc... GdkSurface: Rename lots of stuff from window->surface (*)
  63e060a... GtkWidget: Start renaming widget->window (*)
  19ca278... GtkWidget: Continuer rename of widget->surface (*)
  f440c48... gtkstylecontext: guard against gtk_css_widget_node_get_widg (*)
  4ac450b... Convert all references to GdkEvent->surface (*)
  e6cd6f8... Merge branch 'a11y-fixes' into 'master' (*)
  e798eed... Merge branch 'style-context-null-widget-guard-master' into  (*)
  b83ba41... Merge branch 'accessible-role' into 'master' (*)
  695d141... Merge branch 'rename-window-to-surface' into 'master' (*)
  feb7bf2... gitlab-ci: enable gtk+:gdk tests (*)
  dcc6124... Update POTFILES.in (*)
  28c27f3... Merge branch 'detect-synaptics-touchpads-v2' into 'master' (*)
  b304655... tests: Update renamed symbol (*)
  706a6cf... Merge branch 'tests-gdk' into 'master' (*)
  06b9ef8... Add flatpak builder manifests for our demos
  173a677... ci: Add two flatpak jobs

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