Create a wallet feature flag to direct to the new wallet

In the router, /wallet needs to route to the appropriate component

• Create a feature flag called "wallet-redesign"
• If true, load the new wallet components
• If false, load the old wallet

If you have any questions, talk to Marce

Testing

• feature flag is 'wallet-upgrade'
• see router config resets at the end of wallet.module.ts

there's some definite hackiness here.

!686 (merged)