Channel specific welcome messages (MOTD)

[ToastyStoemp]

Being able to set a message that's sent in the UsersOnline packet, with some information about the channel, specific to the current channel.

With the amount of people asking about 'hacking' related content, it might be nice to have a channel oriented message on join. To remind people about the target topic of discussions.

additionally a command for moderators to set the message for a certain channel
send({cmd:'motd', test:'Welcome to the programming channel.'});

[raf924]

Do it in your own fork.