Add date attribute to the list row

Used to be there previously (at least at 4.7.8). Used in my automation.
Similar to other views: https://github.com/firefly-iii/firefly-iii/search?q=data-date&unscoped_q=data-date

resources/views/v1/list/groups.twig

@@ -54,7 +54,7 @@ TODO: hide and show columns
             {% if group.transactions|length == loop.index and group.count > 1 %}
                 {% set style="border-bottom:1px #aaa solid;" %}
             {% endif %}
-            <tr>
+            <tr data-date="{{ transaction.date.format('Y-m-d') }}">
                 <td style=" {{ style|raw }}">
                     {% if transaction.transaction_type_type == 'Withdrawal' %}
                         <i class="fa fa-long-arrow-left fa-fw" title="{{ trans('firefly.Withdrawal') }}"></i>