[gtk+] (24 commits) Non-fast-forward update to branch wip/matthiasc/no-unmanaged-dnd

[Matthias Clasen <matthiasc src gnome org>]

The branch 'wip/matthiasc/no-unmanaged-dnd' 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:

  2b7aa65... dnd: drop keyboard grabs
  18a577e... Remove much of the unmanaged dnd
  92f924b... cut out more leftovers
  b3b69cf... remove motif dnd leftovers
  1dbe5db... clean up includes
  97fbb5d... Stop handling source-side dnd events
  67cd81d... Handle rootwin drop in gdk
  3184b40... Stop making unneeded calls
  e9290e7... Drop api that is only for unmanaged dnd

Commits added to the branch:

  da76699... SidebarRow: Add Unmount tooltip to eject_button (*)
  17b75f2... Remove motif dnd leftovers (*)
  1ace651... Update POTFILES.in and POTFILES.skip (*)
  2c9144b... Update Chinese (Taiwan) translation (*)
  1e832b2... testpopover: Use HeaderBar to get CSD decorations (*)
  12693c6... Popover: Include window shadows in overshoot calcs (*)
  73c689e... ComboBox: Clarify documentation of get_active_iter (*)
  752b42f... Update Friulian translation (*)
  3cc7acc... Fix Catalan translation (*)
  6bae8aa... Update Friulian translation (*)
  e26b60d... container: Remove leftover prototype (*)
  41f26ea... wayland: Stop using subsurfaces for popovers (*)
  5722f25... x11: Fix initial drag cursors (*)
  a683629... Remove an unused field (*)
  b35f51e... dnd: drop keyboard grabs
  9ad9444... Remove much of the unmanaged dnd
  a317be5... cut out more leftovers
  273570a... clean up includes
  a61aeb3... Stop handling source-side dnd events
  fa7f48c... Handle rootwin drop in gdk
  1481192... Stop making unneeded calls
  6c56d04... x11: Fix managed dnd
  c084ff2... Drop api that is only for unmanaged dnd
  3bc68b3... Remove GdkDragProtocol from the api

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