Removed order property in the getBatchOfData.
This ordering is not possible since you want to go over the entities in order oftheir key and ordering them would prohibit this from happening properly.
#info {
display: block;
padding: 10px; margin-bottom: 20px;
border: 1px solid #333;
background-color: #efefef;
}
#dynamic-add {
list-style: none;
}
#dynamic-add li.handle {
display: block;
padding: 20px 10px; margin-bottom: 3px;
background-color: #efefef;
cursor: move;
}