highlight reference field in Database view

src/core/Entry.cpp

@@ -254,6 +254,17 @@ bool Entry::isExpired() const
     return m_data.timeInfo.expires() && m_data.timeInfo.expiryTime() < QDateTime::currentDateTimeUtc();
 }
 
+bool Entry::hasReferences() const
+{
+    const QList<QString> keyList = EntryAttributes::DefaultAttributes;
+    for (const QString& key : keyList) {
+        if (m_attributes->isReference(key)) {
+            return true;
+        }
+    }
+    return false;
+}
+
 EntryAttributes* Entry::attributes()
 {
     return m_attributes;