table.dataTable tr td:first-child {
    text-align: center;
}

table.dataTable tr td:first-child:before {
    content: "\f096"; /* fa-square-o */
    font-family: FontAwesome;
}

table.dataTable tr.selected td:first-child:before {
    content: "\f046"; /* fa-check-square-o */
}

table.dataTable tr td.dataTables_empty:first-child:before {
    content: "";
}