Adding multi-session cookie

model/session.go

@@ -9,8 +9,7 @@ import (
 )
 
 const (
-	SESSION_TOKEN               = "MMSID"
-	MULTI_SESSION_TOKEN         = "MMSIDMU"
+	SESSION_COOKIE_TOKEN        = "MMTOKEN"
 	SESSION_TIME_WEB_IN_DAYS    = 30
 	SESSION_TIME_WEB_IN_SECS    = 60 * 60 * 24 * SESSION_TIME_WEB_IN_DAYS
 	SESSION_TIME_MOBILE_IN_DAYS = 30