Misc updates to website text

[quintessence]

• Nóva's FOSDEM talk is now in the past, should update language to past tense and include YouTube link (or similar)
• Project Page feedback: Aurae's blurb is great, Hachyderm's blurb doesn't say what it is (Mastodon social media)
  • Could borrow language from the about page for this

[ThisIsMissEm]

@quintessence is this still relevant / do you have some proposed text for the given pages? I'm not sure where the fosdem talk is?