FIX: only show "new pm" in pm tab when looking at your own profile

app/assets/javascripts/discourse/controllers/user-topics-list.js.es6

@@ -2,7 +2,7 @@ import ObjectController from 'discourse/controllers/object';
 
 // Lists of topics on a user's page.
 export default ObjectController.extend(Discourse.HasCurrentUser, {
-  needs: ["application"],
+  needs: ["application", "user"],
   hideCategory: false,
   showParticipants: false,
 
@@ -14,6 +14,11 @@ export default ObjectController.extend(Discourse.HasCurrentUser, {
     loadMore: function() {
       this.get('model').loadMore();
     }
-  }
+  },
+
+  showNewPM: function(){
+    return this.get('controllers.user.viewingSelf') &&
+           Discourse.User.currentProp('can_send_private_messages');
+  }.property('controllers.user.viewingSelf'),
 
 });

app/assets/javascripts/discourse/templates/list/user_topics_list.hbs

@@ -1,4 +1,4 @@
-{{#if currentUser.can_send_private_messages}}
+{{#if showNewPM}}
   <div class="clearfix">
     <a class='btn btn-primary pull-right new-private-message' {{action "composePrivateMessage"}}>{{fa-icon "envelope"}}{{i18n user.new_private_message}}</a>
   </div>