Add support for generating French phone numbers

Sorry for changing the brand new UK phone options, but I thought replacing them with more generic 'country' and 'mobile' options was a better choice for the future, if more countries are going to be supported (and since it's brand new, it's also best if it gets changed early).

All area and non-geographic codes are supported except for toll-free and premium numbers. My reference for French numbers was http://fr.wikipedia.org/wiki/Indicatif_t%C3%A9l%C3%A9phonique_local_en_France