Encoding of job-related configuration files changed to UTF-8

Current Situation

• JobScheduler Master does not support Unicode, see JS-1374
• Instead the Master accepts the ISO-8859-1 encoding (latin1) that can include national character sets. This is why during deployment JOC Cockpit sends job-related files with a latin1 encoding to the Master.
• This works fine e.g. when using a German umlaut such as "ä" in a job title as long as the Master is operated for Windows. If the Master is operated for Linux then such characters are not displayed correctly with JOC Cockpit when later on reading job-related files from the Master.

Desired Behavior

• JOC Cockpit should send UTF-8 encoded job-related files to the Master that forces the Master to store corresponding UTF-8 files.
• This should allow to use national characters as defined by latin1. It does not allow to use any UTF-8 characters that are not available with the latin1 encodiing.