lab 5: taja: added default width and height parameters to the rendering
query string created by WordCountResultsZingChartRenderer.
lab 5: shared: added LoggedEvent and manager and added EventDispatcher methods
that take a LoggedEventManager and receive ESL. taja: updated EventDispatch-
Controller to autowire a LoggedEventManager and to log received events via
the EventDispatcher; added config in servlet spring context.
lab 5: shared: added JsonDeserialize and JsonProperty annotations to Event
and BasicEventImpl so that LoggedEvents can be properly deserialized. taja:
added LoggedEventController and events/loggers/logged_events_list.jsp to
render a list of logged events.