Merge pull request #1496 from millmanorama/timeline_tags_visualiztion

...rc/org/sleuthkit/autopsy/timeline/TimeLineController.java

...org/sleuthkit/autopsy/timeline/events/AggregateEvent.java

.../sleuthkit/autopsy/timeline/events/EventsTaggedEvent.java

...leuthkit/autopsy/timeline/events/EventsUnTaggedEvent.java

...leuthkit/autopsy/timeline/events/FilteredEventsModel.java

.../org/sleuthkit/autopsy/timeline/events/TimeLineEvent.java

...rg/sleuthkit/autopsy/timeline/events/db/Bundle.properties

...src/org/sleuthkit/autopsy/timeline/events/db/EventDB.java

...leuthkit/autopsy/timeline/events/db/EventsRepository.java

...c/org/sleuthkit/autopsy/timeline/events/db/SQLHelper.java

...it/autopsy/timeline/ui/detailview/AggregateEventNode.java

...uthkit/autopsy/timeline/ui/detailview/DetailViewPane.java

...hkit/autopsy/timeline/ui/detailview/EventDetailChart.java

...rg/sleuthkit/autopsy/timeline/zooming/DescriptionLOD.java

...rc/org/sleuthkit/autopsy/timeline/zooming/ZoomParams.java