[polari] (7 commits) Non-fast-forward update to branch wip/fmuellner/misc-fixes

[Florian Müllner <fmuellner src gnome org>]

The branch 'wip/fmuellner/misc-fixes' 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:

  ea0e132... app: Handle errors on connection status changes
  c6d8996... app: Always use a timestamp of 0 when requesting channels
  669d687... accountsMonitor: Replace ::am-prepared signal with a method
  40b6281... mainWindow: Initialize sidebar visibility
  2c05504... roomList: Exclude placeholders from show_all()
  08a724e... app: Present window if appropriate when handling join/query
  a859f2d... app: Ensure we are prepared before handling join-room/messa

Commits added to the branch:

  140c224... app: Handle errors on connection status changes
  781b37c... app: Always use a timestamp of 0 when requesting channels
  6fdc0a4... accountsMonitor: Replace ::am-prepared signal with a method
  6482e92... mainWindow: Initialize sidebar visibility
  f73f342... roomList: Exclude placeholders from show_all()
  8a56e52... app: Present window if appropriate when handling join/query
  271c747... app: Ensure we are prepared before handling join-room/messa