[gnome-control-center] (19 commits) ...applications: Switch to g_spawn_check_wait_status()

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

Summary of changes:

  f7d6c10... applications: Use AdwStatusPage for the empty page (*)
  20bb6d8... applications: Switch to AdwPreferencesPage & family (*)
  1b42b85... applications: Remove CSS file (*)
  0bab8a6... applications: Make CcToggleRow subclass AdwActionRow (*)
  9e38b89... applications: Make CcInfoRow subclass AdwActionRow (*)
  dc4d8e2... applications: Group built-in row with storage (*)
  187a6f6... applications: Set subtitle in built-in row (*)
  c6b35b7... applications: Set subtitle of storage row (*)
  1b0d156... applications: Add header with app icon, name, and buttons (*)
  795cdfd... applications: Remove section titles (*)
  e108849... applications: Remove integration_list and usage_list (*)
  28212c7... applications: Move handlers section into a dialog (*)
  4bd4a6e... applications: Split file & link handlers (*)
  25e0605... applications: Polish the Storage dialog (*)
  53d3b9a... applications: Merge permissions and integration sections (*)
  750c4fc... applications: Add descriptions to permission rows (*)
  de26f9a... applications: Remove CcActionRow (*)
  00cb638... applications: Properly protect against NULL app_id (*)
  77b1821... applications: Switch to g_spawn_check_wait_status() (*)

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