[fractal] (7 commits) Non-fast-forward update to branch multi-account

[Alejandro Domínguez <aledomu src gnome org>]

The branch 'multi-account' 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:

  a50d35c... Split main_stack in login and sessions
  d004744... Make "prepared" signal handling more robust
  d8d42f1... Make gap at the start of the header bar to add accounts but
  97520a1... Add account switcher
  a871caf... Connect button to open login page
  6a4aee2... Show user ids as list labels in the account switcher

Commits added to the branch:

  5a3c22a... Use SyncRoomEvent instead of other types (*)
  f725079... Split main_stack in login and sessions (*)
  cc730de... Make "prepared" signal handling more robust (*)
  4df92d6... Make gap at the start of the header bar to add accounts but
  b8943a0... Add account switcher
  6806417... Connect button to open login page
  c584471... Show user ids as list labels in the account switcher

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