Update site

[oskarth]

During offsite we discussed a bunch of change to copy, structure etc that should be done. This issues is about main copy and structure etc.

• Copy ideas https://hackmd.io/uF95uPEqR4yGh_IWzKxzJQ?view

• More notes https://hackmd.io/rwJEkAEwR3KP9hY4fLrzZw#Website-layoutmenu

More specific issues for other subpages will be created.

[oskarth]

Update:

• Chore(Org): Create labels for tracks and GH board automation research#112 closed
• For some reason staging.vac.dev isn't being updated

TODO:

• Update license for write-ups to CC0 #73
• Update contribute page #82

[oskarth]

Can be closed with #85