Located at /v2wallet for now (ultimate route tbd).

Closes #2055

This is the component skeleton and routing for the wallet upgrade. To test, go to /v2 wallet and click around on stuff. Look at the browser url to see what currency and view you are on.

• Tokens should have 'overview', 'transactions' and 'settings.
• USD should have 'settings' and 'transactions' tabs.
• Ether and Bitcoin should only have 'settings' tabs.

changed milestone to %Wallet Upgrade

added scoped labels