[Work In Progress] Issue #Joindin-273 Display an event in schedule format

I have created various new classes to support the schedule feature.  In an nutshell, I break an event down into individual EventDay helper objects which each have date and talks properties.  The talks property is an associative array in the following format:

(string) startTime => (array) talk objects starting at the given startTime

I plan to pass an array of populated EventDay objects to a view to output the schedule in columnar format.  I have left a var_dump in the Controller/Event::schedule action so that you can see this data structure outputted on the screen.  I will work on the view part next.