Fix jsonpify-imports script to work on all envs
Fix jsonpify-imports script to work on all envs

This works (for me, at least) on Windows and WSL, would love for someone to give it a try on Linux and if it works there too lets merge it in. I'd love to get me some bsi.html.js in my dist folder again :)
Brightspace/brightspace-integration,Brightspace/brightspace-integration