Add i18n support.

As I was following Klondike's instructions, near the end of step 5, I felt like the instructions writer was not as patient as in the previous steps. Many parts I found were not explained thoroughly, there is no code for FlatButton (I know there is code for it at the end, but there is no explanation about that).
I think we need to add some more detailed explanations, if there is no code for it then at least link to the code of those parts

The error can be seen here but it works with any search term.

Looking at the error I suspect it isn't actually search that is at fault, but the highlighting sphinx provides. It looks to be crashing the JS preventing search from completing.

When I google using queries like https://www.google.com/search?q=flame+SpriteComponent I always end up on old versions first.

Can we instruct the crawlers to ignore all versions but the latest, with a dynamically generated robots.txt or something?