Humanize credits amount

[pshenmic]

Issue

1 duff (satoshi) = 1000 credits, and the overall balance of the identities becomes too big for end users. For example:

We need to find a better way to represent current balance to the user

Possible solution

[pshenmic]

We show it as

on the identites page. but this should be extended in other places on the frontend

[riongull]

Should we perhaps just use sats by convention? It would cut the number of denominations that users have to think about from 3 (DASH, sats, credits) down to 2 (DASH, sats). That's a big improvement, and the magnitude of sats is easier to grasp than credits.

What platform uses internally (credits) doesn't necessarily have to be surfaced.