Changed times & schedule. Added sixth speaker slot.

Hey folks.
I added a slot for the sixth speaker, modified the schedule & changed some times on the page.
I would love you all to review it, especially if you are happy with the changes in the schedule.

Look at: (sixpack-version)[http://rawgit.com/asciidisco/nightlybuild.io/sixpack/index.html] to see if the style is okay for you.