feat: add gettext support in xblock-sdk

Author: ttqureshi

workbench/templates/workbench/block.html

@@ -5,6 +5,7 @@
         <link rel="stylesheet" type="text/css"
               href="{% static 'workbench/css/workbench.css' %}">
 	<script src="{% static 'workbench/js/runtime/logger.js' %}"></script>
+    <script src="{% url 'javascript-catalog' %}"></script>
         <script>
             // TODO: This should be handled more modularly.
             studentId = '{{student_id}}';

workbench/urls.py

@@ -2,10 +2,11 @@
 
 
 from django.conf import settings
+from django.views.i18n import JavaScriptCatalog
 from django.conf.urls.static import static
 from django.contrib import admin
 from django.contrib.staticfiles.urls import staticfiles_urlpatterns
-from django.urls import re_path
+from django.urls import re_path, path
 
 from workbench import views
 
@@ -61,6 +62,7 @@
         views.reset_state,
         name='reset_state'
     ),
+    path('jsi18n/', JavaScriptCatalog.as_view(), name='javascript-catalog'),
 
     re_path(r'^admin/', admin.site.urls),
 ]