Repo cleanup

Take some time to go through the various sub-projects and make sure that:

- They install properly via their package manager of choice (npm, yarn):
    - **Side note:** should we standardize on a single package manager? Right now we're using Yarn at the top of the repo, but npm in some sub-projects.
- Dependencies are up to date.
- Linting errors (LWC, ESLint, etc.) are fixed.