This removes the webpack.config.js file, moving the webpack config
into main.js, which replaces config.js.
- Moves the global jQuery into the webpack config in main.js.
- Removes the outdates .nvmrc file in the webpack folder.
- Moves the mockMediaWiki initialization from config.js into
index.stories.js
- Upgrades webpack to 4.22.2
Bug: T271763
Change-Id: Ie008d69e992625113ae98d52ad6d37186eb933de
