[gtk] (33 commits) Non-fast-forward update to branch wip/matthiasc/context-menu

[Matthias Clasen <matthiasc src gnome org>]

The branch 'wip/matthiasc/context-menu' 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:

  4f3f725... Add gtk_widget_set_context_menu
  aabba76... text, entry: Implement context menu api
  e5531e5... text: Add a context action for visibility
  a80bc9d... password entry: Adapt to new context menu api
  bd8c42b... label: Redo context menus
  59c9443... textview: Redo context menus
  57cce72... textview: Support toggle actions
  3ebe014... gtk-demo: Rewrite the search entry demo
  2d6617b... widget-factory: Redo the context menu example
  471eb72... appchooser: Redo context menus
  4999a6d... cell renderer: remove populate-popup
  b83bf51... places sidebar: remove populate-popup
  801d36a... treeview: Stop disabling the context menu

Commits added to the branch:

  8385543... gdkdevice-wayland: Update pointer scale on tablet tool prox (*)
  1aa1610... cssprovider: Export correct API (*)
  8369663... themes: Regenerate CSS (*)
  5cd8e0f... testsuite: Add theme-validate test (*)
  ecdad20... wayland: Avoid using uninitialized memory (*)
  638a3c1... Merge branch 'wayland-cursor-hotspot' into 'master' (*)
  e8f8985... Merge branch 'handle-tool-scale-fix' into 'master' (*)
  50eb11a... gdk/wayland: Listen to wl_surface events on tablet cursors (*)
  8400d8e... css: Letterspacing affects text size (*)
  de2e0f4... Merge branch 'wip/carlosg/tablet-cursors-hidpi-master' into (*)
  5a5da91... Merge branch 'letterspacing-resize' into 'master' (*)
  1932a50... css: Some updates to internal docs (*)
  8727b07... css: Kerning affects text size (*)
  891b343... Merge branch 'style-prop-change' into 'master' (*)
  b260878... label: Stop juggling cursors (*)
  e37f4d0... text: Stop juggling cursors (*)
  f382103... window: Stop juggling cursors (*)
  ba1c5cf... Merge branch 'cursor-things' into 'master' (*)
  0e26e95... window: Fix an oversight (*)
  155920a... Add gtk_widget_set_context_menu
  4b7b8c3... text, entry: Implement context menu api
  6b6aa0d... text: Add a context action for visibility
  71e651b... password entry: Adapt to new context menu api
  0010830... label: Redo context menus
  90663b8... textview: Redo context menus
  35e88df... textview: Support toggle actions
  a8ed421... gtk-demo: Rewrite the search entry demo
  5e3f26c... widget-factory: Redo the context menu example
  ff07d4d... appchooser: Redo context menus
  f4efcaa... cell renderer: remove populate-popup
  2291182... places sidebar: remove populate-popup
  6d65a8a... treeview: Stop disabling the context menu
  c6d5f88... Work towards generic menu popup

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