[gtk] (15 commits) Non-fast-forward update to branch wip/matthiasc/listview-2

[Matthias Clasen <matthiasc src gnome org>]

The branch 'wip/matthiasc/listview-2' 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:

  e718094... gtk-demo: Set default sizes for a few demos
  6386942... listview: Fix keynav
  3f3d653... docs: Add a listview overview section
  733cb03... gtk-demo: Add a large grid demo
  c9f6705... Add GtkDropDown
  e06ea59... filechooser: Use a dropdown for the filter combo
  8d50374... filechooser: Use a dropdown for choices
  ca9a7af... inspector: Use dropdowns in property editor
  6825cc9... inspector: Use a dropdown for attribute mapping
  bc9cf94... inspector: Use a dropdown for controllers
  c4b1524... inspector: Use a dropdown for size groups
  bb0a9d5... inspector: Use dropdowns in the visual page
  1fac416... Turn GtkRecentInfo into an object
  168fb90... testsuite: Skip some GtkDropDown properties

Commits added to the branch:

  113e851... gtk-demo: Cosmetic improvements to the listview demos
  1753091... gtk-demo: Demo columnview sorting
  977281d... gtk-demo: Add filtering to the settings demo
  9861850... listview: Fix keynav
  a0b6d14... docs: Add a listview overview section
  3c581fe... gtk-demo: Add a large grid demo
  e767217... Add GtkDropDown
  58a84b5... testsuite: Skip some GtkDropDown properties
  26e7822... filechooser: Use a dropdown for the filter combo
  9af70cf... filechooser: Use a dropdown for choices
  48448bf... inspector: Use dropdowns in property editor
  ef1993d... inspector: Use a dropdown for attribute mapping
  880ed01... inspector: Use a dropdown for controllers
  5d53d8e... inspector: Use a dropdown for size groups
  f4f2c9e... inspector: Use dropdowns in the visual page