Fix reports

Add currency report
make reports use json storage
Make tables nicer

app/templates/reports/items/by_date.html.j2

@@ -11,9 +11,8 @@
 {% block content %}
   <div class='table-responsive'>
     <table class="table table-dark table-striped table-bordered table-hover"
-          id="two_weeks"
-          data-order='[[ 1, "asc" ]]'
-          data-page-length='25'>
+          id="items_by_date"
+          data-order='[[ 1, "desc" ]]'>
       <thead>
         <th scope="col">
           Item
@@ -26,16 +25,16 @@
         </th>
       </thead>
       <tbody>
-        {% for item in items %}
+        {% for lot, count in data.items() %}
           <tr>
             <td>
-              {{ item.item|get_lot_name }}
+              {{ lot|get_lot_name }}
             </td>
             <td>
-              {{ item.count }}
+              {{ count }}
             </td>
             <td>
-              {{ item.item|get_lot_rarity }}
+              {{ lot|get_lot_rarity }}
             </td>
           </tr>
         {% endfor %}
@@ -44,3 +43,14 @@
   </div>
 {% endblock  %}
 
+{% block js %}
+  {{ super () }}
+  <script>
+    $(document).ready(function(){
+        let items_by_date = $('#items_by_date').DataTable({
+            "processing": false,
+            "serverSide": false,
+          });
+        });
+  </script>
+{% endblock %}