- File names starting with a dash can be potantially harmful. jhead
  chokes on them. Other progs perhaps as well. I have no ideas what to
  do, however!
- Give warning when selecting a thumbnail directory
- External captions (<filename>.txt) overwrite the captions in the
  caption file! Should do something about it (for "backward
  compatibility")
- splitting File menu ?
- splitting General options ?
- primitive locking for shared album editing?

- nach neuem Album einfuehren kein Update in DirList
- Neuer Directory name wird angezeigt (nach down arrow), soll aber
  nicht
- wird aber nicht! in subdir uebernommen
