[gnome-control-center] (28 commits) Non-fast-forward update to branch wip/jsparber/background

[Julian Sparber <jsparber src gnome org>]

The branch 'wip/jsparber/background' 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:

  efa4f48... background: start implementing the new design for the backg
  c9fd9dc... background: add buttons at bottom the of the gallery
  5bfd141... background: clear settings object in dispose
  ebd94d8... background: resize preview when the window size is less the
  f979def... background: add slide icon to time changing wallpapers
  7f15ff8... background: change margins for preview to 16px
  c28b5f5... background: change size of preview when panel is heigher th
  4f1e2a7... background: expand thumbnails to fill a gallery row
  0a3bdee... background: add icon for with time changing wallpapers
  5335865... background: moved gallery item code to grid-item class
  c557dde... background: add white space around gallery and min/max per 
  333f772... background: set wallpaper and lockscreen
  c986c85... background: clean up code
  391880a... background: refactor cc-background-store
  8e298ab... background: make cc_background_grid_item_set_ref static and
  03f8e8f... background: change name cc_background_grid_item_get_ref
  bc44892... background: less exposure of the the wallpaper store
  d036b5e... background: change base obj of CcBackgroundGridItem
  302c3b4... background: CcBackgroundGridItem::new returns its own typ
  51f0af4... background: cache tumbnail for wallpaper gallery for a redr
  5d78a87... background: changed variable names and small style changes
  3ddbc41... background: cache slideshow-emblem icon
  918d63e... background: show only top border for gallery view
  faa00ef... background: adapt meson.build for file changes
  7d2b961... background: change description for open in File and open in
  7bede3f... background: fix merge mistakes created during rebase
  0c672b9... background: fix crash of g-c-c by opening gnome-photos
  97efb7a... background: use autoptr where possible
  cdce6f8... background: clean up files and code and remove build warnin

Commits added to the branch:

  6d95f0e... background: start implementing the new design for the backg
  af276d9... background: add buttons at bottom the of the gallery
  44e6f80... background: clear settings object in dispose
  8a5150e... background: resize preview when the window size is less the
  d321074... background: add slide icon to time changing wallpapers
  2647a82... background: change margins for preview to 16px
  219c416... background: change size of preview when panel is heigher th
  47d87f8... background: expand thumbnails to fill a gallery row
  4471b20... background: add icon for with time changing wallpapers
  917f219... background: moved gallery item code to grid-item class
  4c04af9... background: add white space around gallery and min/max per 
  8113f18... background: set wallpaper and lockscreen
  3a93057... background: clean up code
  6bd2135... background: refactor cc-background-store
  fbc0cc9... background: make cc_background_grid_item_set_ref static and
  3ccf4e9... background: change name cc_background_grid_item_get_ref
  9f922ab... background: less exposure of the the wallpaper store
  fdbc19d... background: change base obj of CcBackgroundGridItem
  ce0ec1e... background: CcBackgroundGridItem::new returns its own typ
  81ccda3... background: cache tumbnail for wallpaper gallery for a redr
  3601466... background: changed variable names and small style changes
  44d3509... background: cache slideshow-emblem icon
  4c792d0... background: show only top border for gallery view
  4f3d8c9... background: adapt meson.build for file changes
  2237a0c... background: change description for open in File and open in
  cd3a71c... background: fix crash of g-c-c by opening gnome-photos
  88024ef... background: use autoptr where possible
  2a9a1d5... background: clean up files and code and remove build warnin