[gnome-photos] (13 commits) Non-fast-forward update to branch wip/abono/sidebar

[Alessandro Bono <abono src gnome org>]

The branch 'wip/abono/sidebar' 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:

  86ad53e... preview-view: Turn it in a GtkGrid
  127bb6a... preview-view: Add a new overlay
  99a559e... preview-view: Move nav buttons to the new overlay
  f2d800a... preview-view: Remove double semicolon
  0991451... preview-view: Rename revealer
  3cf4295... Introduce properties sidebar
  ee134fc... preview-view: Hook up properties sidebar
  ab5dc9b... application: Add action to show/hide properties sidebar

Commits added to the branch:

  fd05c9d... base-manager: Remove redundant NULL check (*)
  ee820c2... item-manager: Be more strict about what is acceptable (*)
  236a89d... Remove PhotosSettings
  869cd67... preview-view: Turn it in a GtkGrid
  08a35c0... preview-view: Add a new overlay
  0f0d956... preview-view: Move nav buttons to the new overlay
  1845059... preview-view: Remove double semicolon
  d730d36... preview-view: Rename revealer
  26cde68... application: Rename variable
  9cc8037... application: Rename variable
  1aa123b... Introduce properties sidebar
  2b6e8b3... preview-view: Hook up properties sidebar
  a7e7dd1... application: Add action to show/hide properties sidebar

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