Starting to rewrite client in EmberJS.
Main features, which are not implemented yet:
* api.php is not compatible with Ember Data yet. Data is stored in Locale Storage of the browser in this stage of development.
* Encryption / decryption of data is not implemented yet.
* There is an error on loading stored data due to embedded objects. Working on a fix, but loading a saved poll is not working for this reason yet.
* Adding user to a poll is not implemented yet.
* Any features for user interface like datepicker are not implemented yet.
To test application you have to open #/create in browser. A route for index is not defined yet.
