Updating dependencies to work with node 14 and for the tests to pass

[martinheidegger]

• node_modules/scrypt can not be compiled with Node 14
• ethereumjs-testrpc is deprecated in favor of ganache
• forever is not node 14 compatible (used when testing the engine)
• Several tests fail with timeout -> Increased timeout
• Ethereum test hangs at fdd5cb365db5571a6ef6ea098f329b8b3d8bab0a during the e2e tests:
  • "watch txId"
  • "sender seals"
  • "receiver seals"
  • "delete watch after X confirmed"
  • "object publish status"
  • "versioning can only be done by previous author"
  • "send sealed"
• Ethereum test error at x during sealwatch tests:
  • "watch":

    expected: |-
    { newwatch: true, readseal: true }
    actual: |-
    { newwatch: true }
    at: Timeout._onTimeout (/tradle/engine/test/sealwatch.test.js:112:7)
    

  • "batch": batch timed out after 100000ms
• Missing dependency updates:
  • "bl" as dependency of old levelup
  • "elliptic" as deep depdenency of web3
  • "underscore" as deep dependency of web3
  • "socket.io-parser" as deep dependency of sendy
  • "lodash" as deep dependency of ganche-core
  • "node-fetch" as deep dependency of web3