Event telemetry generator now works again, giving a timestamp
and a message string. Additionally, removed excess files which
previously were used for the EventListController. #18.
Made the EventListController use domain and range types, rather
than severity, domain, and event message. This allows it to be
more generalized, which should be helpful with different data
formats later on. #18.
When viewing an event message generator new messages are now added to the
bottom of the display, rather than being added to the top and pushing
the other messages down by one. #18.
