Workers related code cleanup.
Realized is better not to refactor too much query generation logic.
Closes #26
Javadoc <p> tags cleanup
Javadoc <p> tags cleanup
Set DirSelectorField to default size in designer
Removed FileSelectionPanel and tweaked project formatting options
Beginning of dump to file functionality: introduced preference keys, added UI to SettingsDialog and implemented load/store with Preferences API
wwjtoolkit: tweaked project formatting options