Audit dependencies and fix client build

[nilsstreedain]

Pull Request Template

Description

General cleanup for installation. Audited npm dependencies to reduce vulnerabilities and improve installation experience. Fixed react build warnings from legacy CSS implementations.

Fixes #39

Checklist:

Before you submit your Pull Request, please make sure you have completed the following tasks:

• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.
• I have tagged my PR with the appropriate label(s).

[Durbin-Elijah]

Thanks for doing this. I tested on my machine and didn't see any issues.
(Did npm audit and npm install before running on both client and server to be sure.)