UI: Links to Help resources and Kleros Solutions

[jaybuidl]

This is a follow-up on #879

Kleros Solutions links

Escrow: https://escrow.kleros.io
Tokens: https://tokens.kleros.io
PoH: https://app.proofofhumanity.id
Curate: https://curate.kleros.io
Resolver: https://resolve.kleros.io
Linguo: https://linguo.kleros.io
Governor: https://governor.kleros.io

Help links

Onboarding: later link to the page for this feature #266
Get Help: https://t.me/kleros
Report a Bug: https://github.com/kleros/kleros-v2/issues
DApp Guide: https://docs.kleros.io/products/court-v2
Crypto Beginner's Guide: https://ethereum.org/en/wallets/
FAQ: https://docs.kleros.io/kleros-faq

Small bug

When switching tab in the browser, it closes the popup. Can we prevent this?

UI