Turn on sourcemaps.

Not sure why I didn't figure this out earlier :)

Commit also includes replacing tabs from copied webpack config.
Upgrade to latest dependencies
Move all webpack config into the actual config files
Have npm start run cult build fixes #16

server.coffee was accidental include from separate project.
Let user decide if they want to remove Moment localization plugins
Remove tabs that slipped in
Don't reload on JS errors

See https://github.com/webpack/webpack/issues/418#issuecomment-54288041
for context
Upgrade dependencies
Merge branch 'master' into gh-pages
New release