Finishing touches

Summary:
A few comments in my rewrite stack got missed, I am addressing them here.
In addition react testing library has been hoisted to the root module in the project and been made available to all sub modules

Reviewed By: mweststrate

Differential Revision: D37712339

fbshipit-source-id: 60984c3d16bd535b0c489570907f097c7d80f634

desktop/.eslintrc.js

@@ -29,6 +29,7 @@ const builtInModules = [
   'immer',
   '@emotion/styled',
   '@ant-design/icons',
+  '@testing-library/react',
   'jest',
   'ts-jest',
 ];