feat(base): Add delete icon to content header

only display if model_delete_url is set

!11 #23

app/templates/base.html.j2

@@ -59,13 +59,25 @@ section h2 span svg {
   margin: auto 0 auto 0;
   fill: #666;
   cursor: pointer;
+  width: 30px;
+  /*height: 30px;*/
 }
+
+.icon-delete svg {
+  fill: #ff0000;
+}
+
 </style>
 
 
     <section>
       <h2>{% block title %}{{ content_title }}{% endblock %}
-        {% if model_name and model_pk%}
+        {% if model_delete_url %}
+        <span title="Delete Item" id="content_header_icon" class="icon-delete" onclick="window.location='{{ model_delete_url }}';">
+          {% include 'icons/delete.svg' %}
+        </span>
+        {% endif %}
+        {% if model_name and model_pk %}
         {% block content_header_icon %}
         <span title="View History" id="content_header_icon" onclick="window.location='{% url '_history' model_name=model_name model_pk=model_pk %}';">
           <svg xmlns="http://www.w3.org/2000/svg" height="30px" viewBox="0 -960 960 960" width="30px">

app/templates/icons/delete.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 -960 960 960"><path d="M280-120q-33 0-56.5-23.5T200-200v-520h-40v-80h200v-40h240v40h200v80h-40v520q0 33-23.5 56.5T680-120H280Zm400-600H280v520h400v-520ZM360-280h80v-360h-80v360Zm160 0h80v-360h-80v360ZM280-720v520-520Z"/></svg>