Make pagination respect any filters or searches or sort keys. Searches and filters will

query the comment service to get their results rather than filtering threads that have
already been loaded.

lms/lib/comment_client/thread.py

@@ -16,7 +16,7 @@ class Thread(models.Model):
     ]
 
     updatable_fields = [
-        'title', 'body', 'anonymous', 'course_id', 
+        'title', 'body', 'anonymous', 'course_id',
         'closed', 'tags', 'user_id', 'commentable_id',
     ]
 
@@ -33,7 +33,7 @@ class Thread(models.Model):
                           'course_id': query_params['course_id'],
                           'recursive': False}
         params = merge_dict(default_params, strip_blank(strip_none(query_params)))
-        if query_params.get('text') or query_params.get('tags'):
+        if query_params.get('text') or query_params.get('tags') or query_params.get('commentable_ids'):
             url = cls.url(action='search')
         else:
             url = cls.url(action='get_all', params=extract(params, 'commentable_id'))
@@ -41,7 +41,7 @@ class Thread(models.Model):
                 del params['commentable_id']
         response = perform_request('get', url, params, *args, **kwargs)
         return response.get('collection', []), response.get('page', 1), response.get('num_pages', 1)
-        
+
     @classmethod
     def url_for_threads(cls, params={}):
         if params.get('commentable_id'):