mod_netconf: unix timestamp instead of string in notif.

There were two ways of eventtime formatting in notification JSON: string
and unix timestamp number.
From now, only unix timestamp is returned.

- refs #1075
diff --git a/src/notification-server.c b/src/notification-server.c
index bbf373e..36013fd 100644
--- a/src/notification-server.c
+++ b/src/notification-server.c
@@ -452,7 +452,6 @@
  */
 static void notification_fileprint (time_t eventtime, const char* content)
 {
-	char t[128];
 	struct session_with_mutex *target_session = NULL;
 	notification_t *ntf = NULL;
 	char *session_hash = NULL;
@@ -486,9 +485,6 @@
 		ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, http_server, "Error while locking rwlock");
 	}
 
-	t[0] = 0;
-	strftime(t, sizeof(t), "%c", localtime(&eventtime));
-
 	if (target_session->notifications == NULL) {
 		ap_log_error(APLOG_MARK, APLOG_ERR, 0, http_server, "target_session->notifications is NULL");
 		if (pthread_mutex_unlock(&target_session->lock) != 0) {
@@ -690,12 +686,9 @@
 			ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, http_server, "notification: POP notifications for session");
 
 			while ((notif = (notification_t *) apr_array_pop(ls->notifications)) != NULL) {
-				char t[128];
-				memset(&t, 0, 128);
-				strftime(t, sizeof(t), "%c", localtime(&notif->eventtime));
 				n = 0;
 				json_object *notif_json = json_object_new_object();
-				json_object_object_add(notif_json, "eventtime", json_object_new_string(t));
+				json_object_object_add(notif_json, "eventtime", json_object_new_int64(notif->eventtime));
 				json_object_object_add(notif_json, "content", json_object_new_string(notif->content));
 
 				const char *msgtext = json_object_to_json_string(notif_json);