JC-Portal: migrate to fusion app management v2 api

[Gustav-Eikaas]

Following the release of app management v2 api we need to migrate to the new api

This comes with some challenges, namely chunking; Fusions endpoint for fetching .js resources require a jwt token. Upon bootstrapping a bundle the javascript code will automatically try to fetch required modules when the code that needs it is invoked. This makes it impossible to attach a jwt token. The only real way to solve this is to setup a reverse proxy with cookie auth that can transform the cookie into a jwt token.

Migration guide supplied by fusion

• equinor/fusion-rfcs#70

[ken-mellem]

We need to make a decision regarding JC Portal.