User with some pages plus Help cannot use page help
1) Create a new user "u1". Give the user some page privs (e.g. Services-DHCP) plus "Help - all pages".
2) Logout of admin and login as "u1".
3) Go to Services-DHCP
4) Click the "?" to get help.
Actual Behavior: A new tab opens, flickers a bit and goes back to displaying the default page of "u1".
Expected behavior: A new tab opens, and directs to the relevant help page.
Fix #7139 Accessing help about this page
from a user that does not have admin or all page privilege.