[gnome-boxes] (8 commits) ...unattended-installer: Drop unused "device_name_to_path" method

[Felipe Borges <felipeborges src gnome org>]

Summary of changes:

  fa76da5... welcome-tutorial, main: Ensure type of WelcomeTutorial in m (*)
  fbbf1d7... shared-folders: Don't throw warning when symlink exists (*)
  82ce42a... app: Demote collection load warning to debug message (*)
  273952f... app: No need to declare a local "app" reference (*)
  feead3e... spice-display: Drop unused "spice_validate_uri" (*)
  f200f78... app: Add runtime check for whether we are running in a Flat (*)
  04c249b... welcome-tutorial: Handle error when failing to load css (*)
  a00cb62... unattended-installer: Drop unused "device_name_to_path" met (*)

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