private TimeZone timeZone = TimeZone.getTimeZone("Europe/Berlin");
@PostConstruct
protected void initialize() {
model = new TimelineModel();
String contextPath = FacesContext.getCurrentInstance().getExternalContext().getRequestContextPath();
// Server-side dates should be in UTC. They will be converted to a local dates in UI according to provided TimeZone.
// Submitted local dates in UI are converted back to UTC, so that server receives all dates in UTC again.