[gnome-shell] (13 commits) Created branch wip/background-rework

[Ray Strode <halfline src gnome org>]

The branch 'wip/background-rework' was created.

Summary of new commits:

  360f1cf... loginDialog: fix cancel from "Not Listed?"
  4fc132e... loginDialog: don't try to stop work spinner if it's already
  b1c07ce... Main: move the stage hierarchy initialization to LayoutMana
  24334ed... layout: rework background handling
  94a325a... background: add slide show support
  7ed6879... sessionMode: load internal session modes immediately
  6aa9b9c... layout: don't bother hiding window group
  5f2bccf... loginDialog: get rid of title label
  40ae05e... loginDialog: drop animations
  a73a033... loginDialog: fade out before starting session
  cac0882... loginDialog: clone user avatar when doing verification
  c5943b5... loginDialog: put "Not Listed?" button and user list in sepa
  48a5a95... loginDialog: add cross fade animation between states