Force archiveEnabled to false if we're in top only mode.

Most of the code handles this case anyway, but it's an easy place for bugs to be created. So it's safest to enforce it at the settings level.

src/main/java/org/qortal/settings/Settings.java

@@ -616,6 +616,9 @@ public class Settings {
 
 
 	public boolean isArchiveEnabled() {
+		if (this.topOnly) {
+			return false;
+		}
 		return this.archiveEnabled;
 	}