Profiles and Following

- Users can follow other users.
- New section on index.php shows 5 newest posts by followed users.
- All profile sections are enabled.
- Name, Email, and About sections can be invisible.
- If posts are set to be invisible, they are excluded from the main
page, searches, and the user's profile.
- Posts still show up when a user views his or her own profile.

Should we try to make posts always visible to the author?