Persistent JS error '$.browser' in almost all the pages is resolved.

The error was because of: ```$.browser``` used in *OrgitDown* script.
- This method has been deprecated by [jQuery](http://api.jquery.com/jQuery.browser/) from v1.3 onwards.
- And we are using the latest version of the jQuery.

The alternative JS code has been added to do the same.

TEST:
- Please do open firebug or any other developer tools in the browser.
- Clear the browser cache (```CTR+STIFT+R```).
- Load the different pages where this error was occurring previously.