fixed display of input type button and images in table cells

js/erp5_loader.js

@@ -555,6 +555,11 @@
 
             // custom cells have text/i18n defined
             if (cell.custom === undefined) {
+              if (field_dict[cell.column] === undefined) {
+                util.error({
+                  "error": "mapRows: Missing definition for " + cell.column
+                });
+              }
               cell.text = field_dict[cell.column].widget.title;
               cell.text_i18n = field_dict[cell.column].widget.title_i18n;
             }
@@ -3630,6 +3635,7 @@
         break;
       case "submit":
       case "reset":
+      case "button":
         container_class_list = "ui-btn ui-input-btn";
         need_text_node = true;
         break;