[gnome-software] (24 commits) ...Merge branch 'category-ui' into 'master'

[Milan Crha <mcrha src gnome org>]

Summary of changes:

  ebb21fa... gs-category-page: Remove UI for sorting
  669cb19... gs-category-page: Remove UI for filtering
  42cce4b... gs-category-page: Remove two redundant GtkBoxes from the UI
  8bf20ed... gs-category-page: Change featured heading label text and si
  7908793... gs-category-page: Convert the featured apps grid to a GtkFl
  9d5150a... gs-category-page: Show all featured apps in the flow box
  3dde842... gs-category-page: Simplify some category code
  8320c30... gs-category-page: Simplify some more category code
  e2f34f1... gs-category-page: Add a heading for the ‘other apps’ sectio
  50e0c1e... gs-category-page: Decouple from GsShell
  4ddc538... gs-category-page: Move a pointless helper function into its
  69b954e... gs-category-page: Factor out category loading code
  8b48c39... gs-category-page: Drop a redundant remove_all() call
  71af900... gs-category-page: Use g_set_object()
  a35f9d1... gs-category-page: Reorder some code in set_category() to be
  3565c10... gs-category-page: Combine all category loading code into lo
  ac3fc94... gs-category-page: Add GsCategoryPage:category property
  c95167b... gs-category-page: Don’t connect signals to placeholder tile
  026df87... gs-category-page: Simplify tile placeholder code
  255e4bd... gs-category-page: Refactor queries to simplify code
  2968d7f... gs-category-page: Rework margins in category page UI
  89f31c2... gs-category-page: Add a ‘recently updated apps’ section
  82ddfae... gs-category-page: Add a top carousel
  0f38fe1... Merge branch 'category-ui' into 'master'