[gnome-control-center] (19 commits) Non-fast-forward update to branch wip/gbsneto/list-layout

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

The branch 'wip/gbsneto/list-layout' 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:

  4e1158b... window: turn into a final class
  a0e4d31... window: add a horizontal box before the stack
  2ef7a5b... window: separate the panel selector
  52043a1... window: make the panels' stack expand
  d886b05... window: remove the fixed width request code
  fb0e8b8... window: remove the small screen hack
  c6a41c8... window: make it a template class
  52b54d7... window: keep searchbar visible when panel changes
  25da164... window: remove the previous button
  4322bf9... window: keep search button always visible
  7136958... window: put the search button in the start of the headerbar
  be5222b... window: pack the headerbar inside a box
  471d9b6... window: introduce the second headerbar
  e79763f... window: make the sidelist and first headerbar horizontally 
  f56907d... window: set the default width and height
  af827ad... window: add a nice placeholder view
  51b6cf5... window: use a listbox
  fdf7ee4... window: reimplement search
  1977fc9... build: create another executable for the new layout

Commits added to the branch:

  41ccfee... window: turn into a final class
  a579b3e... window: add a horizontal box before the stack
  9045c31... window: separate the panel selector
  73d0550... window: make the panels' stack expand
  08dba13... window: remove the fixed width request code
  16dd851... window: remove the small screen hack
  540f4e8... window: make it a template class
  e605c64... window: keep searchbar visible when panel changes
  236990d... window: remove the previous button
  8c65081... window: keep search button always visible
  15be73a... window: put the search button in the start of the headerbar
  6e2dbce... window: pack the headerbar inside a box
  67ad8b3... window: introduce the second headerbar
  e163dce... window: make the sidelist and first headerbar horizontally 
  5f6dacb... window: set the default width and height
  5d61307... window: add a nice placeholder view
  0f5238b... window: use a listbox
  88939bb... window: reimplement search
  1a3fd7c... build: create another executable for the new layout