Prevent enter key to submit the form

We don't want to submit the form when scanning a code bar or ICS id.
In keyboard mode, the scanner sends a CR as last character.

app/static/js/create_item.js

 $(document).ready(function() {
 
+  // Prevent enter key to submit the form
+  // When scanning a code bar, the scanner usually
+  // send a CR as last character. We don't want that
+  // to submit the form.
+  $(window).keydown(function(event) {
+    if(event.keyCode == 13) {
+      event.preventDefault();
+      return false;
+    }
+  });
+
   // Focus to ICS id when loading the page
   $("#ics_id").focus();