The JobScheduler should provide the complete URL to a job documentation file in the XML answer of the <show_job> command

Current Situation

• Because a job documentation file can be stored on a place in the filesystem outside of the JobScheduler installation tree,
  it is very complicated to configure locations for job documentations.

Desired Behavior

• A user would like to specify
  1. the URL to an external location, e.g. Wiki system as in http://kb.sos-berlin.com
  2. the URL to a PDF file, e.g. file:///my_server/path/to/file.pdf
  3. individual text and html files in $SCHEDULER_DATA/jobs
• JOC expects
  1. JobScheduler to provide this URL instead of the complete contents of the description element.
  2. same as no.1
  3. JobScheduler to provide a URL relative to ./scheduler_data/jobs

Implementation

• Possible Solution: The XML answer for command show_job contains a new XML attribute "description_url" (spooler.answer.job description_url).