Description

This fixes the PWA to not return the application on *.json files.

Motivation and Context

The issue appears when visiting the config.json of any meshviewer.
Using curl/wget, one receives the valid json, but in a browser with Service-Worker, the application is returned instead.
This is fixed with this config change.

Besides of the config.json, there is also the locale/en.json and thelike, which should not be handled by the service worker as well.
Instead, they are now correctly served by the browser cache.

How Has This Been Tested?

visit /config.json after visiting the application in a private tab.
Before, this did show the meshviewer as well.

Run npm run build and python -m http.server 8089 -d build to serve this, as the dev server does not have this issue.

Screenshots/links:

Checklist:

• My code follows the code style of this project. (CI will test it anyway and also needs approval)
• My change requires a change to the documentation.
  • I have updated the documentation accordingly.