Service worker tweaks

[zplume]

Details / conversation here:
#133

Thanks!

[zplume]

src\_includes\partials\global\service-worker.js currently excludes any URLs containing .netlify so the Netlify preview build doesn't quite work as expected: pre-caching and the 'offline' page works, but runtime caching doesn't as everything relative to the *.netlify.app domain is excluded.

Not sure if this is intentional (preventing runtime caching on *.netlify.app domains), but commenting out / removing this line should resolve it:

[Andy-set-studio]

Thanks for this! I don't have time for a review right now (got a course to release 😉), but I'll add this to my list for next week.