Add owner edit tooltip

inventory-app/templates/base.html

@@ -63,6 +63,10 @@ body {
 .unclickable {
     pointer-events: none;
 }
+span.tooltipped {
+    text-decoration-line: underline;
+    text-decoration-style: dotted;
+}
 </style>
 
   </head>

inventory-app/templates/inventory_edit.html

@@ -65,7 +65,15 @@
       </tr>
 
       <tr>
-        <td>Owner</td>
+        <td>
+          <span
+            {% if not has_board %}
+              class="tooltipped" data-position="right" data-tooltip="You can only edit items where you are the owner"
+            {% endif %}
+          >
+            Owner
+          <span>
+        </td>
         <td>{{ form.inventory.owner.username }}</td>
       </tr>