Update the UI of the website in production and staging environments

[CristinaEche]

Based on the new design (to be provided by MF asap), update the following data:

1. Update the favicon logo with the Mina protocol logo
2. Update the left side logo header with a Mina protocol logo
3. Github redirection at the top right side should redirect to Mina Foundation GitHub: https://github.com/MinaFoundation/mina-on-chain-voting
4. Update website fonts to the same as the Mina protocol website
5. Footer: update to the traditional Mina protocol website

• © 2024 Mina Foundation. All rights reserved.
• Code of Conduct
• Privacy Policy
• Terms of Service
• Impressum
• change: mina.vote to "Mina On-Chain Voting"
• change: Built with ❤️ by Granola to Built by Granola.

Website address:
https://ocv.minaprotocol.com/ (production env.)
https://on-chain-voting-staging-devnet.minaprotocol.network/ (staging env.)