Added an option to show the year before the month in the header

Some languages shows the year before the month. I've added an option to toggle that.

![Screen Shot 2013-01-28 at 4 00 48 PM](https://f.cloud.github.com/assets/311936/105308/5139b87c-69a7-11e2-8831-e0f8f8dee7a0.png)