Feature: #79777 - EXT:scheduler - Deleted column for tasks added
See forge#79777
Description
A reference to a previously deleted task is now kept in the database with a 
        deleted=1 flag,
in order to check historic calls on scheduler tasks.
See forge#79777
A reference to a previously deleted task is now kept in the database with a 
        deleted=1 flag,
in order to check historic calls on scheduler tasks.