Bundle optimization

[edemaine]

meteor --extra-packages bundle-visualizer --production

• The main offender is including all of FontAwesome, which is ~1.3MB. We should just include the icons that we use. (On the other hand, this will be automatically fixed with Meteor tree shaking, which might be coming soon, so perhaps worth just waiting...)
• react-dom 119kB + react 8kB: Port to Solid 😃
• react-bootstrap 107kB 60.9kB by importing specific components
• flexlayout-react 97.3kB
• fontawesome-svg-core 40.9kB
• Comingle code 136kB (only 18kB in lib): Could be somewhat improved by lazy loading views?

[edemaine]

Finally bit the bullet and directly imported icons from FontAwesome, reducing the bundle from 2.32MB to 1.09MB!

Importing specific components from react-bootstrap reduced a little more to 1.03MB.