[Permissions] Teacher Ability to Set Navigation Options for Observers

[hzeigler]

It would be extremely helpful if teachers could set various course navigation options with view/no view access for observers. One example would be Zoom integration. The teacher likely wants students to be able to access Zoom from course navigation but it can be a violation of FERPA and HIPPA if parents are able to access Zoom navigation and see recorded video chats and such.