Show hostmask on join/part/quit

[v0l]

Add host info for people who join a chan,

v0l (v0@ip) has joined

Also add quit messages

[xPaw]

Quit messages are already shown, do you not see them?

[v0l]

Oh yea i see it, needed update sorry.

[astorije]

I really don't think we shout display host info when someone joins. It's noisy, doesn't add much information, and can be retrieved using a /query. I find that negatively affecting the UX so I'm 👎 on this, sorry!

[dgw]

Gonna go out on a limb here and say that themes should be able to add or remove info in event messages, regardless of whether core does this. (If that's not currently possible/planned, please do correct me!)

@astorije You mean a /whois, no?

[astorije]

Sorry yes, a /whois. And I disagree with this, themes should be about UI, not data/info. Anything else too specific and not UI-related should go in a package.

[xPaw]

It's noisy, doesn't add much information, and can be retrieved using a /query.

It can't be retrieved using commands when you're trying to ban someone that just quit. We should have a way to display hostmasks (by having an option in settings, if so desire), in these messages.

[easymac]

I'm on the side of adding visible hostmasks that can be hidden/shown with CSS as it's an easy way to identify when someone joins under an alias or when a user is being impersonated.

[vectr0n]

+1 Would love to see at least the option to show the ident@host in join/part.

[Jay2k1]

A huge +1. This is a must-have for me.

[richrd]

Big 👍 for the possibility for themes to show the hostmask.
Could be off by default but would be nice if it would be an option.

[astorije]

Added in #94, closing.