ACL not defined for Magento_Backend::web

[bpoiss]

The resource defined in magento/module-backend/etc/adminhtml/system.xml:440 (Magento_Backend::web) has no ACL. On the other hand there is an ACL defined for the resource Magento_Config::web that doesn't exist in magento/module-config/etc/acl.xml:22.

If you give some user role permissions for "Web Section" in the backend, the Web Section will not be visible for this user group.

[piotrekkaminski]

Internal issue MAGETWO-54158

[vherasymenko]

Steps:

1. Install Magento latest develop version
2. Go to Admin side
3. Click "System > User Roles"
4. Click "Add new Role" enter Role name
5. In left side choose Role Resources and check "Dashboard" and "Web Section"
6. Save Role
7. Click "System > All Users"
8. Click "Add new User"
9. Enter data in required fields
10. In left side click "User Role" and choose early created role.
11. Click "Save"
12. Sign out and Log in using credentials of new user
13. Click "Soters > Configuration"

AR: Displayer error
ER: Web Section should be visible for this user

[jspoe]

Created pull request for fixing this issue.
Also changed some other similar ACL problems along the way.

#9628