Use author date to be consistent with other tools (fixes #919)

James Moger

2015-09-18 a592329a82d0a85d33abcc63f08df20b79e8e4f7

 src/main/java/com/gitblit/transport/ssh/SshKeyAuthenticator.java

@@ -19,7 +19,7 @@
import java.util.List;
import java.util.Locale;

import org.apache.sshd.server.PublickeyAuthenticator;
import org.apache.sshd.server.auth.pubkey.PublickeyAuthenticator;
import org.apache.sshd.server.session.ServerSession;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;