Support ENS In Frontend

[apbendi]

• In the wallet status widget: attempt ENS reverse resolution using the ethers.js reverse resolution functionality, and show the .eth name if one is returned instead of the full address. Show the address in a tooltip on hover.
• On the transfer form: In the recipient field, allow the user to type an ENS name. When they exit the field, resolve the address and update the form to show it. If resolution fails, show an in line error