Finalize Browser Support

[seanoshea]

Should really only fully support browsers that we care about.

[seanoshea]

See https://angular.io/guide/browser-support

[seanoshea]

https://circleci.com/docs/2.0/browser-testing too for browser testing

[seanoshea]

https://aws.amazon.com/device-farm/pricing/ ?

[seanoshea]

https://docs.aws.amazon.com/devicefarm/latest/developerguide/test-types.html - looks like protractor isnt supported?