Multiple currency support

[studybuffalo]

Need to look at value of supporting multiple currencies or if that is out of scope of this application.

[studybuffalo]

Have made base-minimum working system based off the locale module. This only supports a single currency, but could be extended.

Rationale

• Opted not to use the locale module as it required changing system-wide settings that could cause too many unintended side effects.
• Looked into babel module, but seemed like a large requirement to add to the project for a single required function.

Going Forward

• Will only be releasing with North American defaults for currency, but future currencies could be easily added by other developers (just need to populate the dictionary).
• Will review multiple currency support in the future.

[jonathan-s]

It looks like Currency should be a model so that the developer can add currencies easily instead of relying on this being updated as hardcoded values.