Make logging in mandatory.

controllers/ViewPeople.php

@@ -12,6 +12,10 @@ class ViewPeople extends HTMLController
 
 	public function __construct()
 	{
+		// Ensure we're logged in at this point.
+		if (!Registry::get('user')->isLoggedIn())
+			throw new NotAllowedException();
+
 		$page = isset($_GET['page']) ? (int) $_GET['page'] : 1;
 		$start = ($page - 1) * self::PER_PAGE;
 		$total_count = Tag::getCount(1, 'Person');