Implements sorting of the timestamp colum by using millisecond sort data
versus using the default alphanumeric sorting of the formatted string.

This caused the issue of AM and PM times being group together instead
of being consecutively ordered.

Example with incorrect method:
May 4, 2011 06:04:36 AM
May 4, 2011 06:10:19 PM
May 4, 2011 10:04:43 AM

Example with corrected sort data:
May 4, 2011 06:04:36 AM
May 4, 2011 10:04:43 AM
May 4, 2011 06:10:19 PM