Added Hour and Minute functionality

Adding a third string to the .ccountdown array now allows for hours and minutes to be calculated.

A little bit of extra JS was required to compare the seconds correctly — Because our new time variable uses two numbers rather than one, there is a 10 second period (when the current time is between 1 and 9 seconds) it requires an additional leading 0.

Other than that, the new _t variable is just added to the _futurestring.