build flag to specify use of index_local.html and locally pulled npm_modules

[marcin-je]

It would be nice to build gatling-rest in such a way that we can do npm install, pull required modules and package that into JAR rather than dynamically loading from the web. In this way we can provide immutable artifact which always would work in the same way. That would help to avoid situations when downstream repos are down, or latest version of module ports to alpha version (like https://unpkg.com/rxjs -> https://unpkg.com/[email protected])

[Abiy]

I think the solution to this is to build the UI using webpack and ship both the source code for UI and the packaged UI. Thanks for the feedback. You can rename index_local.html => index.html and run npm install for the time being if you are unable to load npm modules from unpkg.com.