The previous mechanism didn't seem to work and newer Rails versions have
an easier config for this now.
Also fixing all i18n errors which were now failing specs.
This fixes the following deprecation warning
```
[DEPRECATION] `html` is deprecated - use `html_wrap` instead. Please
note that `html_wrap` will wrap all parts of currency and if you use
`with_currency` option, currency element class changes from `currency`
to `money-currency`.
```
This removes millions of deprecation warnings like the following
```
[DEPRECATION] `symbol_position: :before` is deprecated - you can replace it with `format: %u %n`
```
from the build. It gets printed every time a `Spree::Money` is instantiated.
This should result in a non-negligible speed up of the test suite.
This is already tested by the top-most before block and besides, we
there's no OFN in Japan. We don't need to test all supported currencies
but ensure that the various arguments work as intended.
Spree used to give you more options to configure ActionMailer but our
setup is much simpler. We can remove unused code.
The removed option was never used by OFN and defaulted to true. We don't
need a database migration because the value isn't set in the database.
DEPRECATION WARNING: `#deliver` is deprecated and will be removed in Rails 5. Use `#deliver_now` to deliver immediately or `#deliver_later` to deliver through Active Job.
This was due to an incompatibility between two recent PRs: 5763 and
5733. PR 5733 did not take into account 5763 (the confirm email method was removed) and so the specs introduced
were broken.
We didn't actually change any logic in our version of the Spree
environment file but if we do that in the future, we want to be sure
that it takes effect. Our file was ignored and not loaded before.
