Ensure cuttlefish variable names match values

When showing lists of cuttlefish variables, we ensure that the
names match the values in the table cells and that they are in
the order requested by the user.
Doug whipped this out; inefficient, but it's cli, so ¯\_(ツ)_/¯.

```erlang
match_key_order(Keys, KeyMappings) ->
    [lists:keyfind(Key, 1, KeyMappings) || Key <- Keys,
        lists:keyfind(Key, 1, KeyMappings) /= false].
```