add script for jenkins to run accessibility tests

Centering text in sign in button vertically

Remove "table of contents" from transcript upload languages

Group imports together in Mako templates

fix tolerance rounding error (TNL-904)

Removing background-image from button hovers

Replacing top border on footer

Added Christopher Lee to authors list

MA-642 Add topic_id query to discussion/thread api

Make clean_history.py use the StudentHistoryModule django model.

use 'name' field in 'CreditRequirement' model to save the locatio…

Also added thread_list_url field.

Add teams tab

set default on is_entrance_exam

TNL-1939

Dcikatic/sol 536 [WIP]

ECOM-1592: Adding incourse reverification as a credit requirement in …

Updated AUTHORS

Keyed ConfigurationModel + Admin functionality

[LTI Provider] Use the LTI Outcome Service to pass back scores

Add extensible course view types for edX platform

This change allows the LTI provider to pass grades back to the campus LMS platform using the
LTI outcome service. For full details of the outcome service, see:
    http://www.imsglobal.org/LTI/v1p1/ltiIMGv1p1.html

In brief, the LTI 1.1 spec defines an outcome service that can be offered by an LTI consumer.
The consumer determines whether a score should be returned (in Canvas, this means that the LTI
tool is used in an assignment, and the launch was performed by a student). If so, it sends
two additional parameters along with the LTI launch:

lis_outcome_service_url: the endpoint for the outcome service on the consumer;
lis_result_sourcedid: a unique identifier for the row in the gradebook (i.e. the tool/student/assignment combination).

The LTI Provider launch view detects the presence of these optional fields, and creates database
records for the specific Outcome Service and for the graded LTI launch. Later, when a score on
edX changes (identified using the signal mechanism from previous LTI Provider pull requests),
a Celery task is launched to pass the score back to the LTI consumer.

SOL-236 Manual Enrollments

Add additional "reason" field to CreditRequirementStatus

OpenBadges MVP (SOL-768)