This update allows you restrict/hide module permissions from admin_users with permissions to 'Manage Backend Accounts'.  All module permissions can still be seen and edited by those in the super administrators group.

Changes:

- 'Staff Users' renamed to 'Administrators'.  'Staff Users' is  ambiguous in situations where phproad is used to deliver front end services to other employees/staff. Or on applications that have modules for staff management. Etc.

- 'Administrator' group renamed to 'Super Admin'.

- Fixed Bug: where a user could not access the systems area without first being granted the 'system settings' permission.

- 'Super Admin' user accounts cannot be changed in anyway by normal administrator accounts.

- $CONFIG['RESTRICT_MODULE_PERMISSION_EDIT'] takes an array of module ids. It can be used to hide and restrict permission edits from administrators who have 'manage_users' permission but are not super users.