Inventory plugin should check during insert a process class if it is assigned to jobs and updates the jobs if necessary

Current Situation

If a job configuration has a process class but the process class doesn't exist then the Inventory plugin inserts/updates the job into the INVENTORY_JOBS table with a PROCESS_CLASS_ID == 0.
If the process class configuration is made later then the Inventory plugin inserts the process class into the INVENTORY_PROCESS_CLASSES table but doesn't update the PROCESS_CLASS_ID in the INVENTORY_JOBS table.

Desired Behavior

Inventory plugin should check during insert a process class if it is assigned to jobs and updates the jobs if necessary.