Keep navigator.device object from being defined more than once.
Keep navigator.device object from being defined more than once.

deedubbu/incubator-cordova-blackberry-webworks,corimf/cordova-blackberry,corimf/cordova-blackberry,deedubbu/incubator-cordova-blackberry-webworks,apache/cordova-blackberry,apache/cordova-blackberry,blackberry/cordova-blackberry,apache/cordova-blackberry,blackberry/cordova-blackberry,corimf/cordova-blackberry,blackberry/cordova-blackberry