fix SQL schema

token field has been renamed in #c72f46b3

conf/manager.sql

@@ -6,7 +6,7 @@ CREATE TABLE tokens (
     creation_date datetime DEFAULT NULL,
     expiration_date datetime DEFAULT NULL,
     PRIMARY KEY (id),
-    KEY token (token),
+    KEY secret (secret),
     KEY email_entity (email_address,entityid)
 ) ENGINE=MyISAM  DEFAULT CHARSET=utf8;