feat(@cockpit/explorer): display truncated account balances
feat(@cockpit/explorer): display truncated account balances

Display a truncated account balance if the balance is greater than 20
characters in length. This keeps the "Balance", "Tx Count", and "Index" fields
well-aligned in lists of accounts.

In the account details page continue to show the full balance.

iurimatias/embark-framework,iurimatias/embark-framework