Don't restrain width on img.stretch

css/ebi-css-build/_ebi_table_styles.scss

@@ -54,7 +54,7 @@
   table.width-auto { width: auto; }
   /* some images should be stretched, such as sparkline-style gifs */
   table.data-table img,
-  img.stretch { height: inherit; }
+  img.stretch { height: inherit; max-width: none;}
   /* align table cell text to top */
   table.data-table th,
   table.data-table td,