Added CSS files.

Signed-off-by: Djomanix <johan.kayser@viacesi.fr>
Added index and favicon.

Signed-off-by: Djomanix <johan.kayser@viacesi.fr>
Added JS files.

Signed-off-by: Djomanix <johan.kayser@viacesi.fr>
Added pnacl manifest.

Signed-off-by: Djomanix <johan.kayser@viacesi.fr>
Updated NOTICE for the online IDE contrib.

Signed-off-by: Djomanix <johan.kayser@viacesi.fr>