Sync 5.7.2021.

[DeFiYaco]

• Comment on this: https://github.com/ethereum/sourcify/issues/24#issuecomment-873666909
• geth fork update to 1.10.4
• e2e nightly for all chains

[FabijanC]

• Fetching creation code from database:
  • no need for extra column
  • index space requirement: 1 GB
  • one index is enough? (e.g. for the first 200 hex digits)
  • adapted server logic and UI (v1)
  • still only local

[ligi]

• IPFS problems