integrate with ShareLaTeX.com

@Henryoswald: the already existing translations are de, fr-FR, and en-US. For consistency it might be best to use language-only locales (i.e. fr, en, ...) when there are no separate versions for countries (yet). This is also what translatewiki.net is used to. Were the FR and US tags deliberately used?

Henryoswald, we're almost ready to enable ShareLaTeX.com, thanks to Robin. He identified there are only three more things to do: «

• The messages in the attribution page (at the end) may not work in all languages since the links are excluded

• Language code harmonization: there's de, en-US, fr-FR; it would be best to always use root codes

• A lot of Camel Case words, I'd prefer normal capitalization

»