Watching group PMs by default

[rriemann (Robert)]

If it is a one-time thing, use the shell:

@rriemann

groups = ['my', 'groups']
groups.each do |group_name|
  group = Group.find_by_name(group_name)
  next if group.nil? # skip if group not found
  puts "group: #{group.name}"
  
  # watch group inbox
  # found in discourse/spec/services/post_alerter_spec.rb
  # GroupUser.where(user_id: user.id, group_id: group.id).update_all(notification_level: level) # change for one user
  GroupUser.where(group_id: group.id).update_all(notification_level: GroupUser.notification_levels[level]) # change for whole group
end