Integrate Discord server invite

[osslate]

A lot of people don't know we have a Discord server for members. I'm proposing to integrate a small tool in Netsoc Admin that allows logged in users to get an invite link to the server.

@crnbrdrck also mentioned we should have a member count/online count. Might integrate this with the site too :P

[Strum355]

We ideally should only need a single invite link that we can put somewhere on the page. For netsoc.co we could have the fancy widget as well, would be nice IMO

[osslate]

That opens the server to non-students joining though. Do we want that? As far as I can tell, Discord has an API for getting a one-time invite link which would work to combat that.

[Strum355]

good point. i know we had/have some non students in the server already. Could tie in with Netsoc Bot to generate one-time links. That being said, we should discuss first whether or not we want to impose that restriction