- Add index file to JobId field of File records for PostgreSQL.

- Add index file to JobId field of File records for PostgreSQL.
- Correct several bugs in the job queue scheduler concerning
  rescheduled jobs: 1. The SD status was not cleared causing a
  wrong status to be displayed by Dir after rescheduling. 2. All
  rescheduled jobs became zombies because the jcr use_count was
  not decremented properly.
- Make the Catalog resource required in Client records.
- Order the listing of where a file is (item 2 on the restore
  menu) by StartTime.
- Clarify when a filename only and a full path + filename must
  be entered in items 2 and 8 of the restore menu.
- Fix logic error in resolution of names on IPv4 systems.