Remove call to window.ethereum

[valle-xyz]

Problem: The package uses Web3Modal, but in the initializing calls it depends on window.ethereum. This makes the app crash, when window.ethereum is not found (which is the case when Metamask is not installed).

Solution: Remove the calls from actions in accounts.js.

[valle-xyz]

Hi! I totally like your starter kit. Many thanks!!

I found some issues and fixed most of them. I can create pull requests if you like.

[remote-gildor]

hey, if you can do a PR that would be very much appreciated :)