Made end date format more clear
And shifted it to the left of the end game button.  In most of PlanningPoker, buttons are either around the edges, or in the middle. By shifting the end date to the left of the button, it is more consistent and looks better.

I also changed the date format from the weird '04-May-2014' to 'Closes May 4, 2014 at 11:45 PM', which is a lot more descriptive for the user, and actually gives them a way to know what time the game ends other than the email and im notifications.

Committed by: ajthompson
Merge pull request #399 from ajthompson/deadline-format

Made end date format more clear