Remove unneeded code
The job extension contains many unneeded files. These should be removed
from the repository to avoid confusion.
*
The argument that they are still needed for having an orientation for
writing the job designer does not count because these files will always
be stored in older revisions of the repository.*
DO NOT USE FOLDERS WHICH ARE NAMED “OLD” ->THIS IS A REPOSITORY!!! OLDER FILES ARE AUTOMATICALLY STORED IN OLDER REVISIONS OF THE REPOSITORY!
(from redmine: issue id 2094, created on 2015-01-20 by Daniel.Van.Asseldonk, closed on 2015-01-20)