[gnome-control-center] (42 commits) Non-fast-forward update to branch gbsneto/multitasking

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

The branch 'gbsneto/multitasking' 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:

  fa726af... Introduce the Multitasking panel

Commits added to the branch:

  73469d3... display: Replace GtkStack child names with widget reference (*)
  f00a5e2... display: Fix wrong widget type used (*)
  ee4d08c... keyboard: Use GTK widget types (*)
  ef9b0c7... keyboard: Replace GtkStack child names with widget referenc (*)
  0beed33... applications: Use GTK widget types (*)
  23db1e9... applications: Replace GtkStack child names with widget refe (*)
  4b0d47e... background: Connect signals in swapped form (*)
  2f57847... background: Remove unused variables (*)
  7e0a662... background: Use GTK widget types (*)
  e9ca517... background: Replace GtkStack child names with widget refere (*)
  97ac89b... online-accounts: Use GTK widget types (*)
  ece1911... online-accounts: Replace GtkStack child names with widget r (*)
  1862ec5... keyboard: Connect signals with g_signal_connect_object in s (*)
  3eb0aae... background: Connect signals with g_signal_connect_object in (*)
  6ae9710... universal-access: Connect signals with g_signal_connect_obj (*)
  10e73b7... sharing: Connect signals with g_signal_connect_object in sw (*)
  3e4c1d3... sharing: Move GTK code that was innappropriately in a helpe (*)
  74eb5d9... usage: Connect signals with g_signal_connect_object in swap (*)
  591cd14... mouse: Connect signals with g_signal_connect_object in swap (*)
  f1893b8... color: Connect signals with g_signal_connect_object in swap (*)
  7b0dc2e... default-apps: Connect signals with g_signal_connect_object  (*)
  b492252... applications: Connect signals with g_signal_connect_object  (*)
  c0cfbec... display: Connect signals with g_signal_connect_object in sw (*)
  a6d5678... power: Connect signals with g_signal_connect_object in swap (*)
  100d368... user-accounts: Connect signals with g_signal_connect_object (*)
  f1b84e2... common: Connect signals with g_signal_connect_object in swa (*)
  4502673... printers: Connect signals with g_signal_connect_object in s (*)
  b7fbe4a... printers: Use consistent value for GtkBuilder signal proper (*)
  e6128c9... wacom: Connect signals with g_signal_connect_object in swap (*)
  5b14e16... network: Connect signals with g_signal_connect_object in sw (*)
  9065850... printers: Replace g_variant_iter_next_value with the simple (*)
  46443af... printers: Replace GVariant iteration with direct call to co (*)
  67074b7... printers: Fix GVariantIter leaks (*)
  3a7533d... printers: Use g_autoptr for the results of D-Bus calls (*)
  815db8f... printers: Replace explicit g_variant_unref calls with g_aut (*)
  2b9815d... printers: Remove unnecessary checks on result of g_variant_ (*)
  6b79e7f... printers: Replace D-Bus unrefs with g_autoptr (*)
  e256dd5... printers: Replace D-Bus unrefs with g_autoptr (*)
  02d0015... printers: Simplify D-Bus error case branches (*)
  fe91d17... printers: Remove nesting on a GVariant iteration (*)
  7b1bed5... common: Improve how we print time periods (*)
  92c81a9... Introduce the Multitasking panel

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