Disable generation of unnecessary content

[mattstratton]

Currently when we build with hugo, it builds a lot of "tags" and other pages that we don't use at all.

Hugo 0.19 adds the ability to control this on config.toml as such:

disableKinds = ["page", "home", "section", "taxonomy", "taxonomyTerm", "RSS", "sitemap", "robotsTXT", "404"]

(doing that would make nothing work; so we don't add that)

My theory is we would just add this to config.toml, etc:

disableKinds = ["taxonomy", "taxonomyTerm"]

I think those are the two things that are adding things we don't need (tags, etc).

Just need to experiment with turning the dials and seeing what pages don't get rendered :)

[mattstratton]

Pulling from a milestone because it's a content-based configuration setting; it works though locally. I'll push up a branch.