Minor re-org of contact page

[mjskay]

• Adding a bit more scaffolding for the reader
• Pulled out the emails that are (from the public perspective) email addresses and not mailing lists people can subscribe to into a different section

One question I would have is: do we want the associate editor email address to be public? I have a hard time imagining a productive email that could be sent there that shouldn't either be sent to the organizing committee, the submit address, or to the editor handling a paper directly.

[mjskay]

Second question: do we want to add the email address for the board?

[chatchavan]

I suggest only adding their websites.

[mjskay]

To clarify: this is about the contact page, not the organizers page. Though to be honest, I feel like we should just merge these two pages, it seems wasteful to have both. Maybe "Contact" is the better name?

So an alternative to this PR would be: merge both pages into one, called "Contact / News"?

[mjskay]

Alternatively: We could leave the "Organizers" page but add contact information to it, and change the "Contact" page to just be a "News" page, giving mailing list and social media info (I think I prefer this latter proposal)

[mjskay]

Compare this to #12 --- I think I prefer #12.