[gtk] (21 commits) Non-fast-forward update to branch matthiasc/for-master

[Matthias Clasen <matthiasc src gnome org>]

The branch 'matthiasc/for-master' 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:

  cc35e7a... textview: Give attached children a different css name
  54efe5a... textview: Ensure popup menu is properly inserted
  5097b6e... testsuite: Use lowercase component in test paths
  04ec95c... testsuite: Add more tests for automated components
  e6b2b27... widget: Improve automatic component tracking
  f239d26... print-editor: Fix a critical
  3398056... print-editor: Cosmetics
  ba6b664... treeview: Ensure search popover is properly inserted
  3a9facf... print dialog: Fix frame <> box confusion
  7783981... builderscope: Fix finalize <> dispose confusion
  6570ae9... treeviewcolumn: Another case of box <> frame confusion
  4d7a150... Clean up bin disposal

Commits added to the branch:

  6c63664... widget: Pass parent to gtk_widget_consumes_motion() (*)
  8bd44cb... Add GtkWindowHandle (*)
  4135276... headerbar: Use GtkCenterBox internally (*)
  8ca1e0d... headerbar: Include GtkWindowHandle (*)
  f453883... window: Stop handling dragging and titlebar actions (*)
  8d24711... testsuite: Update bloomfilter test (*)
  f693da1... Update Ukrainian translation (*)
  eae4a19... Merge branch 'wip/exalm/headerbar-dragging' into 'master' (*)
  f6a4e68... Updated Lithuanian translation (*)
  3f54832... textview: Give attached children a different css name
  10921aa... textview: Ensure popup menu is properly inserted
  9d4b01f... testsuite: Use lowercase component in test paths
  caab6ac... testsuite: Add more tests for automated components
  f374aa6... widget: Improve automatic component tracking
  b89a1e1... print-editor: Fix a critical
  56464c6... print-editor: Cosmetics
  8776fe5... treeview: Ensure search popover is properly inserted
  a149334... print dialog: Fix frame <> box confusion
  364391e... builderscope: Fix finalize <> dispose confusion
  3402619... treeviewcolumn: Another case of box <> frame confusion
  5be5c07... Clean up bin disposal

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