[gtk/matthiasc/for-master] (44 commits) ...dropdown: Use our own CSS name

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  b1c00ec... multiselection: Remove unused code (*)
  0f9def6... Merge branch 'wip/otte/for-master' into 'master' (*)
  a0c4890... Merge branch 'matthiasc/for-master' into 'master' (*)
  647ed59... Update POTFILES.in and POTFILES.skip (*)
  71c29bf... listitemmanager: Handle selection-changes properly (*)
  c3a6e35... Drop an unnecessary include (*)
  bda5454... Update Ukrainian translation (*)
  8699c0f... Update Ukrainian translation (*)
  de6327a... multiselection: Clarify docs (*)
  8090e21... Add a test for multiselection persistence (*)
  fd7f19c... selectionmodel: Document the callback apis (*)
  b0cf7a9... Add a forgotten export (*)
  27ce68b... Add tests for select_callback (*)
  3e6e247... multiselection: Rewrite the select_callback implementation (*)
  951c9c5... Merge branch 'listitemmanager-selection' into 'master' (*)
  d150997... Add GtkPropertySelection (*)
  14605d4... gtk-demo: Use a property selection in the colors demo (*)
  e72c243... singleselection: Clarify docs (*)
  c0fe1a7... listbase: Make up/down arrows work (*)
  8fca040... Merge branch 'property-selection' into 'master' (*)
  8316d5e... Merge branch 'list-arrows' into 'master' (*)
  1567db1... Merge branch 'misc-multiselection' into 'master' (*)
  61ccf4e... docs: Fix up the GtkNativeDialog section (*)
  856c895... docs: Put selection models into a section (*)
  9f335d3... docs: Regroup the tree support parts (*)
  a734572... Skip broken a11y tests (*)
  f2259ad... Disable a failing test (*)
  2abb5b6... 3.98.5 (*)
  087f42d... Update Catalan translation (*)
  7c382c6... Annotate the GtkSelectionModel callbacks (*)
  11f971d... gtk-demo: Cosmetic improvements to clocks demo (*)
  180a5a1... gtk-demo: Cosmetic changes to the dropdown demo (*)
  15257e3... gtk-demo: Fix a leak (*)
  b251893... Drop pango version checks (*)
  e35c0e0... gtk-demo: Add overline to the markup demo (*)
  3225b48... Merge branch 'ebassi/for-master' into 'master' (*)
  e942689... gtk-demo: Cosmetics (*)
  bb7500e... gtk-demo: Cosmetics (*)
  b9d7dab... gtk-demo: Improve display of image sources (*)
  a28c75f... gtk-demo: Expand the sidebar by default (*)
  115edc5... Update POTFILES.in (*)
  0a469d7... Update Ukrainian translation (*)
  6ff8f1b... Merge branch 'gtk-demo-tweaks' into 'master' (*)
  b0bb413... dropdown: Use our own CSS name

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