UX: add shortcut for deferring topics (#7798)

app/assets/javascripts/discourse/controllers/keyboard-shortcuts-help.js.es6

@@ -77,6 +77,10 @@ export default Ember.Controller.extend(ModalFunctionality, {
         keys2: [SHIFT, "k"],
         keysDelimiter: PLUS,
         shortcutsDelimiter: "slash"
+      }),
+      go_to_unread_post: buildShortcut("navigation.go_to_unread_post", {
+        keys1: [SHIFT, "l"],
+        keysDelimiter: PLUS
       })
     },
     application: {
@@ -158,6 +162,10 @@ export default Ember.Controller.extend(ModalFunctionality, {
       print: buildShortcut("actions.print", {
         keys1: [CTRL, "p"],
         keysDelimiter: PLUS
+      }),
+      defer: buildShortcut("actions.defer", {
+        keys1: [SHIFT, "u"],
+        keysDelimiter: PLUS
       })
     }
   }

app/assets/javascripts/discourse/lib/keyboard-shortcuts.js.es6

@@ -65,9 +65,10 @@ const bindings = {
   "shift+p": { handler: "pinUnpinTopic" },
   "shift+r": { handler: "replyToTopic" },
   "shift+s": { click: "#topic-footer-buttons button.share", anonymous: true }, // share topic
-  "shift+u": { handler: "goToUnreadPost" },
+  "shift+l": { handler: "goToUnreadPost" },
   "shift+z shift+z": { handler: "logout" },
   "shift+f11": { handler: "fullscreenComposer", global: true },
+  "shift+u": { handler: "deferTopic" },
   t: { postAction: "replyAsNewTopic" },
   u: { handler: "goBack", anonymous: true },
   "x r": {
@@ -618,5 +619,9 @@ export default {
 
   _replyToPost() {
     this.container.lookup("controller:topic").send("replyToPost");
+  },
+
+  deferTopic() {
+    this.container.lookup("controller:topic").send("deferTopic");
   }
 };

app/assets/javascripts/discourse/templates/modal/keyboard-shortcuts-help.hbs

@@ -23,6 +23,7 @@
         <li>{{{shortcuts.navigation.up_down}}}</li>
         <li>{{{shortcuts.navigation.open}}}</li>
         <li>{{{shortcuts.navigation.next_prev}}}</li>
+        <li>{{{shortcuts.navigation.go_to_unread_post}}}</li>
       </ul>
     </div>
     <div>
@@ -64,6 +65,7 @@
         <li>{{{shortcuts.actions.mark_regular}}}</li>
         <li>{{{shortcuts.actions.mark_tracking}}}</li>
         <li>{{{shortcuts.actions.mark_watching}}}</li>
+        <li>{{{shortcuts.actions.defer}}}</li>
         <li>{{{shortcuts.actions.print}}}</li>
       </ul>
     </div>