[gtk] (14 commits) Non-fast-forward update to branch wip/otte/reftests

[Benjamin Otte <otte src gnome org>]

The branch 'wip/otte/reftests' 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:

  5a52e09... wip: Run reftests on CI

Commits added to the branch:

  36ab70c... headerbar: Duct-tape over the measure mess
  7391dc7... Fix textview-margins reftest
  acf9deb... textview: Paint border windows in the right spot
  7bbaabd... reftests: Fix statusbar-remove-all test
  4561697... reftests: Remove style-properties-nth-child test
  dffb0a9... reftests: Fix shorthand-entry-border test
  13e91d1... cssimagelinear: Make gradient offsets stay in [0, 1]
  4734041... reftests: Fix iconview-empty test
  2672d2f... reftests: Fix image-load-from-file test
  c8e3c8c... picture: Don't cause warnings on load failures
  b375f24... reftests: Fix grid-spacing2 test
  86743bc... reftests: Fix grid-empty-with-spacing test
  969905d... reftests: Remove box-packing test
  79924c0... wip: Run reftests on CI