Rename contentstore/views/requests to helpers

This has caused confusion, since this file gets imported when trying to
import the requests library.  And besides, how was this file about
requests in the first place?  Helpers is a much better name.

cms/djangoapps/contentstore/tests/test_request_event.py

@@ -3,7 +3,7 @@ import mock
 
 from django.test import TestCase
 from django.core.urlresolvers import reverse
-from contentstore.views.requests import event as cms_user_track
+from contentstore.views.helpers import event as cms_user_track
 
 
 class CMSLogTest(TestCase):

cms/djangoapps/contentstore/views/__init__.py

@@ -9,13 +9,13 @@ from .checklist import *
 from .component import *
 from .course import *
 from .error import *
+from .helpers import *
 from .item import *
 from .import_export import *
 from .preview import *
 from .public import *
 from .user import *
 from .tabs import *
-from .requests import *
 try:
     from .dev import *
 except ImportError:

cms/djangoapps/contentstore/views/component.py

@@ -26,7 +26,7 @@ from contentstore.utils import (get_modulestore, get_lms_link_for_item,
 
 from models.settings.course_grading import CourseGradingModel
 
-from .requests import _xmodule_recurse
+from .helpers import _xmodule_recurse
 from .access import has_access
 from xmodule.x_module import XModuleDescriptor
 from xblock.plugin import PluginMissingError

cms/djangoapps/contentstore/views/item.py

@@ -12,7 +12,7 @@ from xmodule.modulestore.inheritance import own_metadata
 from util.json_request import expect_json, JsonResponse
 from ..utils import get_modulestore
 from .access import has_access
-from .requests import _xmodule_recurse
+from .helpers import _xmodule_recurse
 from xmodule.x_module import XModuleDescriptor
 
 __all__ = ['save_item', 'create_item', 'delete_item']

cms/djangoapps/contentstore/views/preview.py

@@ -22,7 +22,7 @@ from util.sandboxing import can_execute_unsafe_code
 
 import static_replace
 from .session_kv_store import SessionKeyValueStore
-from .requests import render_from_lms
+from .helpers import render_from_lms
 from .access import has_access
 from ..utils import get_course_for_item
 

common/lib/xmodule/xmodule/modulestore/tests/test_publish.py

@@ -129,7 +129,7 @@ class TestPublish(unittest.TestCase):
         """
         Applies action depth-first down tree and to item last.
 
-        A copy of  cms.djangoapps.contentstore.views.requests._xmodule_recurse to reproduce its use and behavior
+        A copy of  cms.djangoapps.contentstore.views.helpers._xmodule_recurse to reproduce its use and behavior
         outside of django.
         """
         for child in item.get_children():