Dev - Convert to PWA (checklist)

• Refactor naming convention for react components. ( #1490, #1538 )
• Refactor structure of app specific code to live in /src dir. ( #1490, #1538 )
• Eliminate FOIT (Flash Of Invisible Text). ( #1536 )
• Consider inlining svg icons instead of including them as a font. ( #4192 )
• Add Jest & create snapshot tests for react components.
• Add service worker. ( #3000 )
• Score at least a 92 on lighthouse.
• Create Web App Manifest (using webpack-pwa-manifest maybe?).
• Site appropriately informs the user when they're offline.
• Site use cache first networking. ( #3000 )
• Full offline support for all docs pages. ( #3000 )
• Upgrade to use latest webpack.
• Discuss: Inferno instead of Preact?

Score at least a 92 on lighthouse

• Test on lighthouse or now in the Audits section of chrome devtools.
• Should follow these guidelines.

Create Web App Manifest

As described here https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/

Site appropriately informs the user when they're offline

• Use the Network Information API to show the user an indication when they're offline.
• I'm thinking offline.js for this.