客户修改，联系人删除后仍可修改bug

src/main/webapp/webpage/modules/workclientinfo/workClientInfoForm.jsp

@@ -55,7 +55,8 @@
               }
 
               var tableObj = document.getElementById('contentTable').rows[1];
-              if (tableObj == null) {
+              var  contentTableLength = $("table#contentTable tr:visible").length;
+              if (tableObj == null || contentTableLength == 1) {
                   parent.layer.msg("请填写联系人信息!", {icon: 5});
                   return false;
               }