R1:5f593aafb1ac

Allow logged-out users to load global preferences on installs without public viewers

Summary:
Fixes T11946. When a logged-out viewer is loading a page on a non-public install, there are two policy issues which prevent them from loading global settings:

- They can not see the Settings application itself.
- They can not see the global settings object.

Allow them to see Settings by making mandatory applications always visible. (This doesn't make any application pages public.)

Allow them to see the…