Add missing methods for showing fediverse followers

Fixes #791

activitypub.go

@@ -65,6 +65,20 @@ type RemoteUser struct {
 	SharedInbox string
 	URL         string
 	Handle      string
+	Created     time.Time
+}
+
+func (ru *RemoteUser) CreatedFriendly() string {
+	return ru.Created.Format("January 2, 2006")
+}
+
+func (ru *RemoteUser) EstimatedHandle() string {
+	if ru.Handle != "" {
+		return ru.Handle
+	}
+	username := filepath.Base(ru.ActorID)
+	host, _ := url.Parse(ru.ActorID)
+	return username + "@" + host.Host
 }
 
 func (ru *RemoteUser) AsPerson() *activitystreams.Person {