New: Included partials

coscine/issues#1127

src/NotificationBus/Controller/NotificationBusController.cs

-using Coscine.ApiCommons;
-using Coscine.ApiCommons.Factories;
-using Coscine.Configuration;
+using Coscine.Configuration;
 using Coscine.Database.DataModel;
 using Coscine.Database.Models;
 using Coscine.NotificationChannelBase;
 using Coscine.NotificationConfiguration;
-using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Newtonsoft.Json.Linq;
 using Stubble.Core.Builders;
+using Stubble.Core.Loaders;
 using System;
 using System.Collections.Generic;
 using System.Reflection;
@@ -47,9 +45,9 @@ namespace Coscine.Api.NotificationBus.Controllers
         }
 
         [HttpPost("[controller]/sendAsync")]
-        public IActionResult SendAsync([FromBody] NotificationParameterObject notificationParameterObject)
+        public async Task<IActionResult> SendAsync([FromBody] NotificationParameterObject notificationParameterObject)
         {
-            SendNotifications(notificationParameterObject);
+            await SendNotifications(notificationParameterObject);
             return Ok();
         }
 
@@ -113,7 +111,11 @@ namespace Coscine.Api.NotificationBus.Controllers
             }
             var template = (JObject)(action.Template[channelName][language]);
 
-            var stubble = new StubbleBuilder().Build();
+            var stubble = new StubbleBuilder()
+              .Configure(settings =>
+              {
+                  settings.SetPartialTemplateLoader(new DictionaryLoader(_notificationConfiguration.GetPartialsForChannel(channelName, language)));
+              }).Build();
 
             var dict = new Dictionary<string, object>();
             if (requestArgs["placeholder"] != null)
@@ -129,7 +131,6 @@ namespace Coscine.Api.NotificationBus.Controllers
             }
 
             return template;
-
         }
 
         private List<User> GetUsers(List<string> userIds)