Allow direct connection QDN retries every hour, instead of every 24 hours.

src/main/java/org/qortal/controller/arbitrary/ArbitraryDataFileListManager.java

@@ -197,8 +197,8 @@ public class ArbitraryDataFileListManager {
             }
         }
 
-        if (timeSinceLastAttempt > 24 * 60 * 60 * 1000L) {
+        if (timeSinceLastAttempt > 60 * 60 * 1000L) {
-            // We haven't tried for at least 24 hours
+            // We haven't tried for at least 1 hour
             return true;
         }