[1023] make art master branch build for kano os

[lauraenria]

• The old mechanism for config in lib/core/config.js is conflicting with the new one, where we pass the CONFIG json to index.js from Kash. To fix this we remove the keys not use and add the missing ones from config.js to the new files in the config folder, and export window.CONFIG. In app.js config should be pass directly into factory methods without being manipulating it before.
• We rename cfg in config.
• we add also the right path to access fonts and to set up production
• modify permission