* Rename account balance field for clarity
`original_balance` and `original_currency` may infer that these values are "original" to the account. In reality, they represent the "current" balance and currency on the account.
* Prepare fixture data for account sync testing
* Update to new field
* Fix conflicts
* Remove local schema change
* Initial foundational pass at multi-currency
* Default format currency
* More work on currency and exchanging
* Re-build currencies on change
* Currency import/setup
* Background job overhaul + cheaper OXR plan support
* Lint fixes
* Test fixes
* Multi-currency setup instructions
* Allow decimals in the balance field
* Spacing fix for form
---------
Signed-off-by: Josh Pigford <josh@joshpigford.com>
