Tweaks to webpack build to reduce boilerplate

[lmorchard]

• Add dist to .eslintignore
• Rework base index.js to dynamically load all components, so we don't have to add them manually as we go
• Rework storybook config to just use project index.js
• Misc line ending lint fixes

[lmorchard]

Main things here are:

1. Move all the imports into the base project index.js so that both npm run storybook and npm run build:webpack build basically the same thing
2. Use require.context() from webpack to dynamically import all the components so that we don't need to list them manually