Include missing events and fix save functionality in admin service template settings form
What does this MR do?
This MR includes missing settings left out in the Admin -> Service Templates page and fixes the inability to save certain settings.
Are there points in the code the reviewer needs to double check?
No.
Why was this MR needed?
Because the service template form was broken and untested.
What are the relevant issue numbers / Feature requests?
Before:
After:
