handle specific jk_update output

Got some more jk_update output to work with, this improves jk_update error/output handling.

added 7 commits

• 7996816a...a265c649 - 6 commits from branch ispconfig:develop
• d98e837f - handle jk_update 'ERROR: failed to remove deprecated ...'

Compare with previous version

added MR: Review Pending label

added MR: Reviewed MB label

added Implemented MR: Reviewed TB labels and removed MR: Review Pending label

changed milestone to %3.2

merged

mentioned in commit 5f67c8b2