[gnome-games] (9 commits) Non-fast-forward update to branch wip/exalm/libhandy2

[Alexander Mikhaylenko <alexm src gnome org>]

The branch 'wip/exalm/libhandy2' 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:

  98ca45d... ui: Use HdyLeaflet in preferences window
  4ba115b... ui: Add PreferencesSidebar
  9d59f84... preferences-window: Use PreferencesSidebar

Commits added to the branch:

  d544844... ui: Remove separator and titlebar libhandy styles (*)
  2bac7c1... gamepad-view: Fix gamepad svg loading with old librsvg (*)
  8abad46... game-thumbnail: Implement height-for-width sizing (*)
  23d7f38... game-icon-view: Remove 'size' property (*)
  7187056... game-icon-view: Fill the entire width (*)
  4177bf3... collection-icon-view: Set children size via CSS (*)
  4366da5... ui: Use HdyLeaflet in preferences window
  8695dad... ui: Add PreferencesSidebar
  5981069... preferences-window: Use PreferencesSidebar

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