Adding support to multi language

[ezefranca]

Following the same idea of technologies.json I created a json file with the strings to replace on the index.template.

Nothing sophisticated but works. I tried the i18n-js gem, but it's too much for this simple change. The result will be a folder called localized and inside all folder with the language code, for example Portuguese localized/pt/index.html

In this PR I added Portuguese, French and Spanish.

To add or edit a new language is just update that on languages.json

Off course since English is the main language it will be created on main folder and on the localized.