Fix console error and warning messages

[StillFantastic]

trafficstars

• [ ] ethereum.enable() is deprecated
• [ ] web3.currentProvider.rpcEngine is undefined in ethutil.js
• [ ] MetaMask: MetaMask will soon stop reloading pages on network change. For more information, see: https://docs.metamask.io/guide/ethereum-provider.html#ethereum-autorefreshonnetworkchange Set 'ethereum.autoRefreshOnNetworkChange' to 'false' to silence this warning.