for #5: Edit Containers link to about:preferences

webextension/js/popup.js

@@ -16,3 +16,9 @@ browser.runtime.sendMessage('get-identities').then(reply=> {
     console.log('response from sdk addon: ', reply.content);
   }
 });
+
+document.querySelector('#edit-containers-link').addEventListener('click', ()=> {
+  browser.runtime.sendMessage('open-containers-preferences').then(()=> {
+    window.close();
+  });
+});

webextension/popup.html

@@ -22,7 +22,7 @@
   </table>
   <div class="row popup-bumper edit-identities">
     <div class="small-12 columns edit-containers-text">
-      <a href="#">Edit Containers</a>
+      <a id="edit-containers-link" href="about:preferences#containers">Edit Containers</a>
     </div>
   </div>
   <script src="js/popup.js"></script>