ed_classified 5.x-1.3

Minor changes to close some security holes and fix formatting problems.
- Adding check_plain() to watchdog entries to prevent script injection in logs.
- Added missing check_markup() to theme_classified_body()
- Added missing check_markup() to theme_ed_classifieds()
- Got rid of verbose logging of date change on hook_submit()

Other fixes/changes:
- Removed empty hook_nodeapi implementation.
- Fix Drupal 5 port bug found in expired ad purge code.
- Cleanup watchdog log entry format for ad expiration and purge.
- Fixed bogus settings descriptive text fouled up during D5 port.