Grouping fails after restoring notifications

[wntiv-main]

If the config has changed, new grouping rules will not be applied to notifications restored from prior to the change. Additionally, restored grouped notifications will not "update" other members of their group.

Reproduce:

• run mako with the default (an empty) config
• spawn a couple of notifications (e.g. with notify-send test)
  
• close the notifications to the history (e.g. right-click)
• change the grouping config (e.g. add group-by=app-name)
• reload the config (makoctl reload)
• restore the notifications
  
• note: adding another notification will update them
  
• extra: deleting a notification from a group and then restoring it will not correctly put it back in it's group
  

Analysis:
handle_restore_action never calls group_notifications in any way. A similar snippet as:

mako/dbus/mako.c

Lines 323 to 329 in c4df229

	struct mako_criteria *notif_criteria = create_criteria_from_notification(
	notif, &notif->style.group_criteria_spec);
	if (!notif_criteria) {
	continue;
	}
	group_notifications(state, notif_criteria);
	free(notif_criteria);

from reapply_config would fix.