[gnome-control-center] (5 commits) Non-fast-forward update to branch wip/feborges/new-printers-panel

[Felipe Borges <felipeborges src gnome org>]

The branch 'wip/feborges/new-printers-panel' 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:

  a3376b9... printers: use panel-wide page for empty-state
  c51d7c1... printers: enforce the empty-state patterns
  452a278... printers: present spinner while populating the panel
  4e7ce2e... printers: introduce PpPrinterEntry widget
  fa1e96e... printers: introduce PpDetailsDialog

Commits added to the branch:

  abab6c2... printers: use panel-wide page for empty-state
  f2ac5a8... printers: enforce the empty-state patterns
  3ba4fcf... printers: present spinner while populating the panel
  c0f2073... printers: introduce PpPrinterEntry widget
  fb4b0a5... printers: introduce PpDetailsDialog