Add experimental Direct Reply feature

app/src/main/AndroidManifest.xml

@@ -77,8 +77,10 @@
         </service>
 
         <receiver android:name=".push.PushManager$DeleteReceiver"
-            android:exported="false">
-        </receiver>
+            android:exported="false" />
+
+        <receiver android:name=".push.PushManager$ReplyReceiver"
+            android:exported="false" />
 
         <meta-data
             android:name="io.fabric.ApiKey"

app/src/main/java/chat/rocket/android/activity/AbstractAuthedActivity.java

@@ -76,7 +76,7 @@ abstract class AbstractAuthedActivity extends AbstractFragmentActivity {
     if (intent.hasExtra(PushConstants.NOT_ID)) {
       isNotification = true;
       int notificationId = intent.getIntExtra(PushConstants.NOT_ID, 0);
-      PushManager.INSTANCE.clearMessageStack(notificationId);
+      PushManager.INSTANCE.clearMessageBundle(notificationId);
     }
   }