Fix buggy behaviour if user sets friendly name as blank.

Hide "clear logs" button when viewing PMS logs (it has no impact on those).
Start major clean up of classes.
Initial work to allow SSL communication to Plex servers.

data/interfaces/default/edit_user.html

@@ -47,7 +47,9 @@ DOCUMENTATION :: END
             async: true,
             success: function(data) {
                 $("#edit-user-status-message").html(data);
-                $(".set-username").html(friendly_name);
+                if ($.trim(friendly_name) !== '') {
+                    $(".set-username").html(friendly_name);
+                }
             }
         });
     });