Change video transcripts to use locators instead of locations.

Part of STUD-870
Disable Peer Track Changes
STUD-1008
Merge pull request #1860 from edx/hotfix/no-error-messages

removes temporary error messages
add all clear message
Merge pull request #1864 from edx/adam/add-all-clear-message

add all clear message
Merge pull request #1877 from edx/ned/hotfix-2013-12-04-with-temp-stuff-removed

Update 12/3 RC branch with the part of the hotfix we want permanently.
Merge pull request #1821 from edx/rc/2013-12-03

rc/2013 12 03
Reduce sql queries for groupname tests. (STUD-1039)

Conflicts:
	cms/djangoapps/auth/authz.py
In OpenEndedModule latest_score and all_score calculate sum of rubric scores every time for ML grading.
ORA-72
Merge pull request #1906 from edx/hotfix/2013-12-10

Hotfix/2013 12 10
Auth converting to new course_id syntax
Use mongo indices for all queries
STUD-1039
Merge pull request #1937 from edx/hotfix/2013-12-12

Hotfix/2013 12 12
fixing merge conflicts
Merge pull request #1960 from edx/e0d/release-merge

E0d/release merge