Partial Update for Ethernaut

[okbel]

Partial Update for Ethernaut

This is a partial update for Ethernaut, the full upgrade is on the ES branch but solidity, truffle, ganache-cli updates are necessary. https://github.com/OpenZeppelin/ethernaut/tree/ES Once the ES branch is completely functional and fully checked by the OZ team we can proceed to make that branch become master.

Note: Not all of the styled components are here, the full version on the ES branch. This partial update is sufficient.