Fix build system linting and npm ci errors

[benloh]

After correcting issue #19, new errors in linting were revealed because the new prettier react rules are not equivalent to the older prettier/react config. There are also lingering issues with npm ci that we'd like to eliminate.

• [ ] rename .eslintrc.json to .estlintrc.js so we can add comments to it without violating JSON-ness
• [ ] add additional relaxation rules to the config
• [ ] fix the npm errors, or at least find out where they are coming from.

[dsriseah]

Taking this ticket because it's become a production blocker for Ben with all the new linting errors

[benloh]

Fixed with #22 and #23