+ AuthBind中添加BindType

- 合并函数GetAuthBindsByAuthID2
- User中的mobile与email改为可为null

business/jxutils/jxutils.go

@@ -449,7 +449,7 @@ func HandleUserWXRemark(db *dao.DaoDB, mobile string, mobileIsUerID bool) (err e
 			}
 		}
 		if userID != "" {
-			authBind, err2 := dao.GetAuthBind(db, userID, weixin.AuthTypeMP, "")
+			authBind, err2 := dao.GetAuthBind(db, userID, model.AuthBindTypeAuth, weixin.AuthTypeMP, "")
 			if err = err2; err == nil {
 				openID = authBind.AuthID
 			}