[keycloak-dev] Updates to keycloak.js including support for Cordova

I've polished keycloak.js and also added a few more features to it: * Cordova support * Account management support * Load config from keycloak.json * Added a bunch of events (onAuthSuccess, onAuthError, onAuthRefreshSuccess, onAuthRefreshError, onReady) * Async methods now return promise (init, updateToken, loadProfile) I need to update the documentation, but there's two new examples: * example/js-console - exposes pretty much all functionality in the js lib * example/cordova - basic Cordova example (tested with Android phone and emulator)