Notification Configuration - MailFragment support for use of multiple job resources is broken

Current Situation

• As explained with the JS7 - Notifications - Configuration Element MailFragment article the attribute job_resources should accept a list of JS7 - Job Resources that specify mail server connection settings.
• This does not work:
  • GUI - the MailFragment accepts a single job resource only.
  • Monitor Service - does not properly resolve the sequence of job resource assignments.

Desired Behavior

• The handling of a number of job resources should work fine.
• The sequence of assignments is relevant as variables with the same name are not overwritten in the order of the first to the last assignment.

Test Instructions

• Configuration->Inventory
  • create a job_resource e.g. mail with the mail settings.
    • set the from_name argument to from mail job resource
  • create a job_resource e.g. mail_copy as a copy the mail job resource.
    • set the from_name argument to from mail_copy job resource
  • Deploy this job resources
• Configuration->Notification
  • assign the job resources to a MailFragment job_resources attribute:
    • use ordering: job_resources mail mail_copy
      • Release this configuration and run a workflow order
      • Check From of the recieved mail - it should be from mail job resource
    • use ordering: job_resources mail_copy mail
      • Release this configuration and run a workflow order
      • Check From of the recieved mail - it should be from mail_copy job resource