Additional Security Mode

Currently there is a gap in the security modes that can be seen in the following situation (which is how my wiki is set up):

• The front page and certain subpages are readable by everyone, editable by a list of users.
  • Currently supported under "Semi-Public"
• Many of the pages under the front page are department homepages.  For most of these access (read and write) should be restricted to only members of each department.
  • Currently supported under "Private"
• Some of these departments would like to have pages that a all of the department can see, but only some of the department can edit.
  • This seems to be a combination of Semi-Public and Private.  Not everyone would be able to see the page, and not everyone who can see the page can edit the page.

I propose that either

• the current system is broken out into two lists: users that have view access and users who have edit access or
• another security mode is added that allows for two lists.
  • The only real difference would be that the two lists would be shown in the UI for this new mode