Add comments on risky permissions

[bennothommo]

To assist admins when assigning permissions to users, I have added comments to permissions that should only be given to trusted users. These permissions, if given to untrusted users, may pose a security risk due to being able to negatively manipulate the experience of other users, or could be potentially used to grant themselves more access than intended.

Summary by CodeRabbit

• New Features

  • Permission comments now appear as tooltip-enabled info icons next to permission labels for clearer explanations.

• Documentation

  • Updated permission labels and added descriptive notes covering unsafe Markdown, administrator/impersonation rights, branding, and CMS permissions to clarify access implications.