Fixed subscription select by date.

api/users.rb

@@ -167,12 +167,8 @@ get "#{APIPREFIX}/users/:user_id/social_stats" do |user_id|
 
     # with the array of objectId's for threads, get a count of number of other users who have a subscription on it
     user_stats.keys.each do |user_id|
-      if end_date then
-        user_stats[user_id]["num_thread_followers"] = Subscription.where(:subscriber_id.ne => user_id, :source_id.in => thread_ids[user_id], :created_at.lte => (end_date)).count()
-      else
       user_stats[user_id]["num_thread_followers"] = Subscription.where(:subscriber_id.ne => user_id, :source_id.in => thread_ids[user_id]).count()
     end
-    end
 
     # Get the number of threads read by each user.
     users = User.only([:_id, :read_states]).where("read_states.course_id" => course_id)

spec/api/user_spec.rb

@@ -614,7 +614,7 @@ describe "app" do
           make_request('*', DFLT_COURSE_ID, DateTime.new(2015, 02, 01)).should == {}
 
           check_social_stats(make_request('*', DFLT_COURSE_ID, DateTime.new(2015, 03, 01)), {
-            @user1.id => make_social_stats(1,0,1,3,0,3,5,0,0),
+            @user1.id => make_social_stats(1,0,1,3,0,3,5,1,0),
             @user2.id => make_social_stats(0,1,0,0,0,1,0,0,0),
           })