Merge branch 'credit-card-blacklist'

* credit-card-blacklist:
  Credit card blacklist

Credit card blacklist

Any card on the list is just treated as though it is not present, preventing it
from being used.

Declines should be an Int

Previously this retured a string and everywhere that used it had to
convert it into an it, or handle it if it's nil.

That's dumb.
Now it's always an int, and `nil.to_i` is 0 anyway so I don't have to
check that either.

Order Transactions by Date

In my testing the natural order just happened to be the date order
because I had so little data.

But in the real world we should probably be more explicit!

Transaction Note Can Be Null

Not only is it allowed, but actually there's a ton of empty notes. Every
monthly account activation is missing a note, so practically every user
that has transactions will have empty notes.

Merge branch 'tx-list'

* tx-list:
  Admin Command Menu + Admin Financial View
  Transactions List
  Customer Financials
  Telephone Link

Customer Financials

I've pulled out information about payment methods and bitcoin into its
own thing. It's kind of a repository, except that it only exposes
fetchers and doesn't load anything generally.

There's also a few new methods here that aren't used yet, but will be
shortly.