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.
Set Content-Type to application/json and charset to utf-8 to tell the browser how to handle the response
Lock traffic on https for 1 day (86400 seconds) by Strict-Transport-Security
Forbid the browser to load scripts from another domain by Content-Securty-Policy
Last ones were adopted by Talenka's Pull Request for ZeroBin: https://github.com/sebsauvage/ZeroBin/pull/70
