[TIMOB-24235] Add new method to overwrite device locale

Switch locale is a very important feature for all multilingual applications, especially after iOS 9 and Android 4.2 RTL support. ref http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language http://stackoverflow.com/questions/4985805/set-locale-programatically Check my RTL guide https://github.com/HazemKhaled/Titanium_RTL_guide