1. Create a new user with all the permissions as manager (or at least
Accounting) except Inventory
2. Login and then go to Invoicing --> Settings
3. Do a minor change, save
An access error occurs.
Since the settings of all modules are smartly loaded in v11, it now
implies that a user must have extra manager access rights to be allowed
to save them. We could have kept separate actions for each setting page,
but we would have missed the fun of access errors.
Anyway, security-wise this is not an issue to force the manager groups
since a user with 'Settings' access rights can change his own rights.
It's just very annoying. Or fun.
Complement of aa65a46fc5Fixes#21766
opw-801210