Fixes#1439.
When reorganizing fiat-value component to not use global state, had missed its necessary `currentCurrency` parameter.
This now passes it in wherever it's used.
- Makes account list items no longer flex larger than they should be.
- Makes the add account button not flex larger than it should be.
- Adds a line under the add account button to define its size.
Calls to `eth.sign` are now transiently persisted in memory, and displayed in a chronological stack with pending transactions (which are still persisted to disk).
This allows the user a method to sign/cancel transactions even if they miss the Chrome notification.
Improved a lot of the view routing, to avoid cases where routes would show an empty account view, or transition to the accounts list when it shouldn't.
Broke the transaction approval view into a couple components so messages and transactions could have their own templates.
Dan Finlay
kumavis
Kevin Serrano
Frankie
Frankie