Create en.json

Starting to convert to .json
Update en.json

Adding the translations.
Create de.json

Adding translation for German (Deutsch)
Create es.json

Adding translation for Spanish (español)
Create ar.json

Adding translations for Arabic
Create nl.json

Adding translations for Dutch (nederlands)
Create ru.json

Adding translations for Russian
Update Foreground.i18n.php

Converting to use i18n .json files which was introduced in mediawiki 1.23.
Merge pull request #114 from thingles/test

Updating to use .json files