* Build everything in `public/` folder, to serve only this and avoid
issues with `publicPath` in webpack.
* Moved some icons to FontAwesome and use spinning wheels from
FontAwesome to indicate loading.
* (Very) beginning of a webplayer.
Also includes misc fixes
* Use CSS modules for all the CSS.
* Fix a bug in the filterbar which was not filtering anything.
* Fix a l10n issue in songs view.
* Update hook to clean build repo before running, preventing to push
dev built code.
* Update webpack build code.
