Add Org User status to roles description and table

[brittag]

In order for my end-users in our regulated environment to have confidence that they are managing access to their orgs appropriately according to their access control requirements, they need to understand CF org user management in depth, including hidden/implied roles.

This is a proposal for documenting Org User status, following up on my comment at cloudfoundry/cli#781 (comment) and this discussion in #cf-docs in the Cloud Foundry Slack. I figure an illustration of what might be helpful to us can be helpful. :)

This is a best guess at what the documentation should look like - I haven't verified all of the checkboxes here, and I haven't tried running this locally to check for formatting/display errors. I verified that if I have org user status (but no other roles) on an org, I can "View users and roles".

[cfdreddbot]

Hey brittag!

Thanks for submitting this pull request! I'm here to inform the recipients of the pull request that you and the commit authors have already signed the CLA.

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this:

https://www.pivotaltracker.com/story/show/150491632

The labels on this github issue will be updated when the story is started.

[seviet]

@zrob Hey Zach-- could you review the addition of this column to the roles table and let us know if there should be any changes? Many thanks!!

[brittag]

Thanks @seviet! @zrob Here are screenshots of the changes, in case that's helpful for reviewing this (I got it set up locally now):

[zrob]

LGTM

[seviet]

Thanks @brittag and @zrob!!