* Unifies the filename suffix to .test.js
* Display @babel/no-invalid-this rule for tx-controller.test.js
* Add test file extension to test:unit:global
* Use @metamask/eslint-config@1.1.0
* Use eslint-plugin-mocha@6.2.2
* Mark root ESLint config as root
* Update Mocha ESLint rules with shared ESLint config
* Use selector for state.metamask.accounts in all cases.
* Default to cached balance when selecting metamask accounts
* Adds the cached-balances controller
* Documentation and small codes fixes for #5843
Co-Authored-By: danjm <danjm.com@gmail.com>