Fix `npm test` and tidy up dependencies#279

Merged

ryan-collingham merged 5 commits intomorganstanley:masterfrom ryan-collingham:rlc/fix_npm_test

Sep 19, 2019

+6-6

Commits on Sep 17, 2019

Add babel-preset-react-app as a dependency and move enzyme into devDeps
ryan-collingham
committed
Remove unused @babel/polyfill and bump versions of ag-grid
ryan-collingham
committed

Commits on Sep 18, 2019

Merge branch 'master' into rlc/fix_npm_test
ryan-collingham
authored

Commits on Sep 19, 2019