Always show Bookmark icon. Always show edit if the post is a wiki.

app/assets/javascripts/discourse/views/post-menu.js.es6

@@ -109,7 +109,9 @@ export default Discourse.View.extend({
         var button = creator.call(self, post);
         if (button) {
           allButtons.push(button);
-          if ((yours && button.opts.alwaysShowYours) || (hiddenButtons.indexOf(i) === -1)) {
+          if ((yours && button.opts.alwaysShowYours) ||
+              (post.get('wiki') && button.opts.alwaysShowWiki) ||
+              (hiddenButtons.indexOf(i) === -1)) {
             visibleButtons.push(button);
           }
         }
@@ -202,7 +204,10 @@ export default Discourse.View.extend({
   // Edit button
   buttonForEdit: function(post) {
     if (!post.get('can_edit')) return;
-    return new Button('edit', 'post.controls.edit', 'pencil', {alwaysShowYours: true});
+    return new Button('edit', 'post.controls.edit', 'pencil', {
+      alwaysShowYours: true,
+      alwaysShowWiki: true
+    });
   },
 
   clickEdit: function(post) {

config/site_settings.yml

@@ -89,7 +89,7 @@ basic:
   post_menu_hidden_items:
     client: true
     list: true
-    default: 'edit|bookmark|delete|admin'
+    default: 'edit|delete|admin'
     choices:
      - like
      - edit