Updated Content for ml5.js next gen

[shiffman]

First, apologies, but my VSCode settings adjusted many small style elements in the codebase, we should create .vscode directory with workspace settings for this project so we can keep it uniform. This is a first pass at editing some language that needs refreshing from the previous site.

Some misc notes and questions:

• I removed the Code of Conduct from the site b/c it is the older language before the creation of the newer Code of Conduct which lives in its own repo. So I'm linking to that, but perhaps some quotes or overall language would still be good to keep.
• For elements that are "coming soon", should we remove these or do we have some initial content we can add? Personally, I might prefer to temporarily remove and then add them in when ready (over having "coming soon" on the site.)
• @sproutleaf and @acosmica, it might be worth checking out this google form and seeing if it still applies or if we want to change it?
• We need to add updated credits about the website, maybe it should also link to the all contributors part of the GitHub repo?
• We need to add updated information about the collaboration between NYU Shanghai and NYU NY, as well as #8 as noted by @gohai.

We're so close to launching the site, yay!

Perhaps this list should get broken out into issues for future development? I'll be reviewing the docs site next!

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