Update foreground.php

Switch to json based I18n system as used by MW 1.23+
Update Foreground.i18n.php

Switch to json based I18n system as used by MW 1.23+
Create en.json

Switch to json based I18n system as used by MW 1.23+
Create de.json

Switch to json based I18n system as used by MW 1.23+
Create ar.json

Switch to json based I18n system as used by MW 1.23+
Create es.json

Switch to json based I18n system as used by MW 1.23+
Create nl.json

Switch to json based I18n system as used by MW 1.23+
Create ru.json

Switch to json based I18n system as used by MW 1.23+
Update de.json

Tweak German translation
Update foreground.php

Add license information to skin properties
Create COPYING

Add license information to skin properties
Update CHANGELOG.md
Update foreground.php

Remove link to license for time being
Merge pull request #179 from kghbln/develop

Follow up for the 1.1 release