Default to prod data during local development

[contolini]

Changes the local dev environment to use the production complaints API at consumerfinance.gov by default (and updates documentation accordingly).

To get the app running locally you can now just yarn start instead of first having to set up ccdb5-api locally. You can still use a local API if you want by changing the proxy field in package.json.

See DATAP-1268 for context

Changes

• Local CRA proxy points to cf.gov instead of localhost:8000.

Testing

• Pull down this branch.
• yarn start and the app should open and show ~ 5MM complaints.

Checklist

• Changes are limited to a single goal (no scope creep)
• Code can be automatically merged (no conflicts)
• Code follows the standards laid out in the front end playbook
• Passes all existing automated tests
• New functions include new tests
• New functions are documented (with a description, list of inputs, and expected output)
• Placeholder code is flagged
• Visually tested in supported browsers and devices
• Project documentation has been updated (including the "Unreleased" section of the CHANGELOG)

[flacoman91]

I can't test this, but this looks good.

Great to not have to load up the ccdb data pipeline for FE work!

[BrewCityBoy]

Table loaded with 4 million+ records. Works perfectly.