* use more GlazedLists stuff (EventList, AutoCompleteSupport) and remove obsolete classes (SimpleListModel, TextCompletion)
* don't use SearchResultCache in EpisodeListClient (was only done for better ui interactions)
* removed caching from ResourceManager
* some improvements based on FindBugs warnings
* use args4j for improved argument parsing
* updated ant build script
* more general MessageBus/Handler (use Object as message type instead of string)
* ChecksumComputationService is not a singleton anymore
* TemporaryFolder is always recreated if it is deleted by the user, or another instance shutting down
* Notifications flicker less when one window is removed and the others are layouted
* lots of other refactoring
