Working on database improvements
DBHelper is completed, and seems to work after minimal testing. Could
use some refactoring.
Fixed a null pointer issue involving Timeline.getEvents()
Added popup windows that display the name, category, and some sample
text for events. Also added highlighting on mouse over. Completely
refactored TLEventLabel classes to make adding style much easier.
Implemented save method in TLEvent, minor changes, added Xtext to the
project (I think it's for css viewing...?)
Merge pull request #3 from joshuawright11/josh

Josh