[18.0][FW] Blacklist of some PRs from 14.0

[thienvh332]

The following PRs have been blacklisted:

• [14.0][FIX] It seems that sometimes jobs doesn't have a job_method and the __repr__ failed #440: The changes from this PR are already present in the current source code.
• [14.0][IMP] queue_job: new app icon #511: The changes from this PR are already present in the current source code.
• [14.0] Fix trap_jobs() recordset comparison #537: The changes from this PR are already present in the current source code.
• [14.0][REF] Clean-up for Python 3 #728: The changes from this PR are already present in the current source code.