MS-330 add langauge and devtime params, cleanup other request code
MS-330 add langauge and devtime params, cleanup other request code

8tracks/appnexus-mobile-sdk-ios,8tracks/appnexus-mobile-sdk-ios,8tracks/appnexus-mobile-sdk-ios,appnexus/mobile-sdk-ios,8tracks/appnexus-mobile-sdk-ios,appnexus/mobile-sdk-ios,appnexus/mobile-sdk-ios,8tracks/appnexus-mobile-sdk-ios,appnexus/mobile-sdk-ios,appnexus/mobile-sdk-ios,appnexus/mobile-sdk-ios