Upgrade jStorage to v0.4.12

Project site

* http://www.jstorage.info/ and https://github.com/andris9/jStorage/tree/v0.4.12

jquery.jStorage.js file

* https://github.com/andris9/jStorage/blob/v0.4.12/jstorage.js

Author and contact

* Andris Reinman and email andris.reinman@gmail.com

README

* https://github.com/andris9/jStorage/blob/v0.4.12/README.md

Upgrading from 0.4.10 to 0.4.12.

Change-Id: I62899c8a2a7b9b2ae5b0f4b6ec06ee24cb966806