Fix discussions in xmodules

common/lib/xmodule/xmodule/discussion_module.py

 from lxml import etree
+from pkg_resources import resource_string, resource_listdir
 
 from xmodule.x_module import XModule
 from xmodule.raw_module import RawDescriptor
@@ -6,6 +7,11 @@ from xmodule.raw_module import RawDescriptor
 import json
 
 class DiscussionModule(XModule):
+    js = {'coffee':
+            [resource_string(__name__, 'js/src/time.coffee'),
+            resource_string(__name__, 'js/src/discussion/display.coffee')]
+        }
+    js_module_name = "InlineDiscussion"
     def get_html(self):
         context = {
             'discussion_id': self.discussion_id,

common/lib/xmodule/xmodule/js/src/discussion/display.coffee

+class @InlineDiscussion
+  constructor: (element) ->
+    @el = $(element).find('.discussion-module')
+    @view = new DiscussionModuleView(el: @el)

lms/static/coffee/src/discussion/main.coffee

@@ -3,9 +3,6 @@ $ ->
   window.$$contents = {}
   window.$$discussions = {}
 
-  $(".discussion-module").each (index, elem) ->
-    view = new DiscussionModuleView(el: elem)
-
   $("section.discussion").each (index, elem) ->
     discussionData = DiscussionUtil.getDiscussionData($(elem).attr("_id"))
     discussion = new Discussion()