more changes for times and time zones... changed from "localtime" to "time zone" field when specifying hookup events.  I need to test more, and fix up existing tests, but I wanted to commit before I lose anything.
Also, changes to scrum tests, and a bit to scrum index page to better distinguish and handle scrums vs. pairprogramming events.
I made a couple more changes, all tests pass now... continuation of previous check-in
more changes for times and time zones... changed from "localtime" to "time zone" field when specifying hookup events.  I need to test more, and fix up existing tests, but I wanted to commit before I lose anything.
Also, changes to scrum tests, and a bit to scrum index page to better distinguish and handle scrums vs. pairprogramming events.