updated pdf viewer
Fix the pointer to the contentstore in the bok-choy settings
Move overview drag and drop code to a utility class.
Merge pull request #3218 from edx/zoldak/bok-choy-contentstore

Fix the pointer to the contentstore in the bok-choy settings
Merge pull request #3208 from edx/christina/container-reorder

Move overview drag and drop code to a utility class.
Change user.is_authenticated to user.is_authenticated() in roles.py.
LMS-2442
Merge pull request #3065 from edx/waheed/lms2442-fix-is_authenticated-in-roles

Change user.is_authenticated to user.is_authenticated() in roles.py.
Updating the ORA2 hash for release week 2014-04-07
BLD-970: Fix flaky test.
Merge pull request #2986 from edx/dcs/a11y-pdfreader

Accessible PDF textbook viewer
Merge pull request #3215 from edx/anton/fix-test-video-position

Video: Fix flaky test.
Merge pull request #3233 from edx/sanchez/update-ora2

Updating the ORA2 hash for release week 2014-04-07
This makes the metrics tab "bars" clickable.

  Clicking on any of the bars displays a list of students for that
  particular action (either opened the subsection or attempted the
  problem). The list is only displayed if the number of students
  is less than 250. A csv download is also available.