There's a bunch of logging bits we need to find out what happened in
`#5294`, the first of which is logging as we are used to for Rails
itself. Turns out we were already logging but the log lines weren't
displayed.
That's because workers have no access to the Rails logger unless we hack
things a bit in the config/initializer. If we want to keep DJ's logs in
a different file, which I think is good for debugging purposes, we need
to diverge from Rails.logger.
However, there's no access to Delayed::Worker.logger in custom job
classes either so there's no way other than mimicking that logger's format
if we want log lines to be consistent.
Now the current logs will see the light like:
```
2020-05-07T14:09:42+0000: [Worker(host:8dc5e7e6f434 pid:1)] Job SubscriptionPlacementJob (id=54) RUNNING
2020-05-07T14:09:42+0000: Placing Order for Proxy Order 1
2020-05-07T14:09:42+0000: Issue in Subscription Order 2: complete
2020-05-07T14:09:42+0000: Placing Order for Proxy Order 7
2020-05-07T14:09:42+0000: Issue in Subscription Order 3: complete
2020-05-07T14:09:43+0000: [Worker(host:8dc5e7e6f434 pid:1)] Job SubscriptionPlacementJob (id=54) COMPLETED after 0.3378
2020-05-07T14:09:43+0000: [Worker(host:8dc5e7e6f434 pid:1)] 1 jobs processed at 2.8054 j/s, 0 failed
```
We'll see if we need to format these messages differently to make them
more greppeable.
Also, add a missing . to card_set? that eanbles it! If the card was
already set, it would anyway set the default card. Now it will use the
defined card if there is one already.
For exchange fees with calculator that is order-based:
* "Fee Calc on Transfer Through" should show "Entire Orders through
DISTRIBUTOR_NAME".
* For tax category:
a. If the enterprise fee itself has a tax category, this is used.
b. If the enterprise fee inherits the product's tax category, this is
"Various".
c. If the enterprise fee has no tax, this is blank.
For coordinator fees:
* "Fee Calc on Transfer Through" should be "All".
* For tax category: Same as abova.
