EVENT: Silicon Salon

Issue tracking tasks associated with Silicon Salon event:

* [x] initial sponsors approval (Crossbar, Proxy)
* [x] identify blackout dates & choose draft date (May 24, 9am PDT)
* [x] draft of invite to send for additional sponsors (see below)
* [x] shared with additional sponsors
* [x] Tropic-Square has signed up
* [x] Feedback on date and final invite
* [x] Yubico says FIDO event in Berlin, maybe May 1
* [x] confirm final date with Sponsors. (is June 1st)
* [x] Setup web page & eventbrite
* [x] Send invites
* [x] Plan presentations
* [x] @ChristopherA intro & @kanzure's bookend
* [x] Review other presentations, suggest content
* [x] Crossbar
* [x] Tropic Square
* [x] Libre-SOC
* [x] Proxy
* [x] Edit presentations for time
* [x] Finalize Agenda
* [x] Email registrants Monday before.
* [x] Event
* [x] Recording & Bryan’s notes to
* [x] Post Event
* [x] Publish initial results to website (first draft now at https://www.SiliconSalon.info)
* [x] Seed topic discussion on Github
* [x] Tweetstorm ( https://twitter.com/ChristopherA/status/1532238387280629760 )
* [x] Email via Eventbrite to all participants
* [x] Rewrite Feature Row to allow multiple buttons
* [x] Upload presentations with audio to YouTube and update website
* [x] Add more key quotes to website.
* [x] Add regular sponsors, credits to website
* [x] Make https://siliconsalon.info work
* [x] Rebuild DNS using CNAMEs
* [x] Small Button at bottom on each topic leading to discussions topic.
* [x] see if there is a small button CSS in jekyll template.
* [x] Do Intro Video
* [x] Update Blockchain Commons Logo to v3
* [x] Add LibreSOC Slides & Transcript
* [x] Add other slides and transcripts
* [ ] Missing transcript for @ChristopherA opening talk. Add and link.
* [ ] Debrief/Post-mortem with Sustaining & Project Patrons
* [x] Crossbar
* [ ] Tropic Square
* [x] Proxy
* [ ] Bitmark
* [ ] Seed discussions, kick off plans for next event.
* [ ] Promote final website and presentations.

/cc @kanzure @shannona