There's a but in the app's profile section where the link to
invite friends is never rendered, even if the currently logged-in
user has no added contacts.
This is because the UI refers to the count of *all* contacts the
user has (even removed ones - remember that, once added, removing
a contact is only done by removing a tag).
This commit ensures that the invitation link is rendered by
relying on the *added* contacts list. It also prevents the
"blocked contacts" button from rendered when there's no blocked
contacts.
3bf15785fa