Updated devGuide SDK and Eventlisting portlet project for ADT

The Locations portlet now supports the use of application display templates, so you can script how you wan the locations displayed. I added a Freemarker script for the readers to use in their ADT for the portlet. Russ is teaching the reader about adding ADTs using our Locations portlet as the example.

Updated the devGuide SDK to a recent commit in the 6.2.x branch.

I had Cody test these changes, for sanity sake too. :-)