Tasks:
- Update code so that it works with jQuery v1.8 and later, too
- Support for dummy sub-tasks
- Small	fixes and simplifications

Annotator:
- Update XLogger
- Logging improvements
- Recognized a missing dependency (viewer & editor -> wrapper),
  which	silently broke editor before
- Small	fixes
Small fixes
Task Manager improvements

1. When overriging an existing sub-task with a new one, remove the old one fromthe count.
2. Provide a "dump" method to analyse current state of tasks.