[devhelp] (3 commits) Non-fast-forward update to branch wip/swilmet/misc

[Sébastien Wilmet <swilmet src gnome org>]

The branch 'wip/swilmet/misc' 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:

  06df1d2... window: remove dead #define

Commits added to the branch:

  679cdad... window: remove dead code
  8a7a92a... window: use g_signal_connect_object()
  41f3cf2... window: various small code improvements