Fixed security warnings. Resolves #1043.

[MillenniumFalconMechanic]

Test plan

• npm start to run DB locally, manual click through of core functionality
• npm test to run automated tests

Snyk Report

> snyk test

Testing /data-browser/spa...

Organization:      millenniumfalconmechanic
Package manager:   npm
Target file:       package-lock.json
Project name:      data-browser
Open source:       no
Project path:      /data-browser/spa
Licenses:          enabled

✓ Tested 24 dependencies for known issues, no vulnerable paths found.

npm audit Report

> npm audit
                                                                                
                       === npm audit security report ===                        
                                                                                
found 0 vulnerabilities