don't include ActionController::UrlWriter w/rails3

refs CNVS-9166

include Rails.application.routes.url_helpers instead

(in most of these, should be refactored to not include those either, but
not going down that rabbit hole in this commit.)

Change-Id: I3a7091ac604c811d9b7ad2777c289fc8c6477822
test-plan: N/A
Reviewed-on: https://gerrit.instructure.com/25725
Reviewed-by: Jacob Fugal <jacob@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Jacob Fugal <jacob@instructure.com>
QA-Review: Jacob Fugal <jacob@instructure.com>

app/models/calendar_event.rb

@@ -606,7 +606,11 @@ class CalendarEvent < ActiveRecord::Base
 
   class IcalEvent
     include Api
-    include ActionController::UrlWriter
+    if CANVAS_RAILS2
+      include ActionController::UrlWriter
+    else
+      include Rails.application.routes.url_helpers
+    end
     include TextHelper
 
     def initialize(event)

app/models/conversation_message.rb

@@ -17,7 +17,11 @@
 #
 
 class ConversationMessage < ActiveRecord::Base
-  include ActionController::UrlWriter
+  if CANVAS_RAILS2
+    include ActionController::UrlWriter
+  else
+    include Rails.application.routes.url_helpers
+  end
   include SendToStream
   include SimpleTags::ReaderInstanceMethods
 

app/models/discussion_topic/materialized_view.rb

@@ -21,7 +21,11 @@
 class DiscussionTopic::MaterializedView < ActiveRecord::Base
   include Api::V1::DiscussionTopics
   include Api
-  include ActionController::UrlWriter
+  if CANVAS_RAILS2
+    include ActionController::UrlWriter
+  else
+    include Rails.application.routes.url_helpers
+  end
 
   attr_accessible :discussion_topic
 

app/models/message.rb

@@ -18,7 +18,11 @@
 
 class Message < ActiveRecord::Base
   # Included modules
-  include ActionController::UrlWriter
+  if CANVAS_RAILS2
+    include ActionController::UrlWriter
+  else
+    include Rails.application.routes.url_helpers
+  end
   include ERB::Util
   include SendToStream
   include TextHelper

app/presenters/take_quiz_presenter.rb

@@ -1,5 +1,9 @@
 class TakeQuizPresenter
-  include ActionController::UrlWriter
+  if CANVAS_RAILS2
+    include ActionController::UrlWriter
+  else
+    include Rails.application.routes.url_helpers
+  end
   include ApplicationHelper
 
   attr_accessor :quiz,