Fix: category delete button broken by double-quote conflict in onclick attr

app/templates/admin.html

@@ -424,7 +424,7 @@
                   <div>{{ c.name }}</div>
                   <small>{{ c.slug }}</small>
                 </div>
-                <button onclick="deleteCategory({{ c.id }}, {{ c.name|tojson }})">Delete</button>
+                <button onclick='deleteCategory({{ c.id }}, {{ c.name|tojson }})'>Delete</button>
               </div>
             {% else %}
               <div class="list-item">Категории пока не созданы</div>