Added calendar Property to GlobalizeCulture

The calendar Property is used to get and set the default calendar. See
https://github.com/jquery/globalize/tree/79ae658b842f75f58199d6e9074e01f7ce207468#defining-culture-information
and

https://github.com/jquery/globalize/blob/79ae658b842f75f58199d6e9074e01f7ce207468/lib/globalize.js#L263
Merge pull request #2547 from StefanSchoof/master

Added calendar Property to GlobalizeCulture