Codelab out of date with latest material theme plugin

[ColtonIdle]

I went through this entire codelab. Thank you very much for the great showcase of everything you've built. Unfortunately, I think when you use the material plugin from material.io it doesn't match up correctly with this codelab. There are a few things in regards to naming that don't match up.

This is just a general bump to try to keep the codelab updated if possible.