Change service location in frontend, another upload script

[elsaperelli]

Summary

This PR changes the service location URL in the frontend app to no longer have the /metadata endpoint. It also adds a new db option: loadPublishableContent. This essentially does the same thing as loadBundle (takes a measure bundle or directory of measure bundles and uploads them to the measure repository service); however, the one difference is that if there are any draft artifacts in the measure, they will be coerced to active so they can be uploaded without error.

New behavior

• npm run db:loadPublishableContent script

Code changes

• README.md - additions regarding new db upload option
• package.json - npm run db:loadPublishableContent
• app/src/pages/index.tsx - remove /metadata
• service/scripts/dbSetup.ts - loadPublishableContent now allows measure bundle and measure bundle directory upload while coercing artifacts to active

Testing guidance

• cd service
• npm run db:reset
• npm run db:loadContentBundle <path to one of the bundles where Measure has status draft>
• cd ..
• npm run start:all
• Make sure Measure has been uploaded with status active
• Check Service Location URL in frontend

[lmd59]

What are your thoughts to having this script load the environment variable and do this publishable coercion based on that rather than the script name?