Overriding white color for messages on dashboard

Merge two hotfixes to release

Hotfix 2015 09 02 LTI Provider Fixes

fix issue where video player renders twice (TNL-3064)

This is necessary to properly implement the LTI outcome passback
spec. It was not included previously because it was causing problems
with Canvas, but Blackboard will not accept outcomes unless they are
properly signed.

The requests_oauthlib doesn't support the body hash spec out of the
box, so BodyHashClient needed to be made. Fortunately, it's a pretty
simple spec:

https://oauth.googlecode.com/svn/spec/ext/body_hash/1.0/oauth-bodyhash.html

The instructions say that this should be left blank until the
initial launch, but Django Admin kicks that out because blanks
are not allowed at the model level.

Revert "OSPR-535 Partial Credit"

This reverts commit 7624c633.

Upgrade uglify-js to 2.4.24

The latest version of uglify-js fixed a vulnerability which allows a specially crafted Javascript file to have altered functionality after minification.

Changelog between the versions we are running can be found in the Readme file from this diff: https://github.com/mishoo/UglifyJS2/compare/v2.4.15...v2.4.24#diff-04c6e90faac2675aa89e2176d2eec7d8

We use the command line without any special arguments so I don't expect any issues.

Disable team discussion Jasmine tests

Change imports from path to use the stablest name.

Convert CohortedTestCase to use SharedModuleStoreTestCase.

This is a temporary solution until we can fix TNL-3007

MAYN-86: Use microsite platform_name and email_from_address if available

Fixed test_about_me_field failing on chrome bok choy

Improve teams test run times by skipping signals

Adjust create new team page breadcrumbs.

TNL-2964

Edit team page for Instructors only.

Instructor dashboard: Improve course timeline info

fixed broken test

fixes for broken tests

fetch transcript for html5 if 404

TNL-1914

Some low hanging fruit optimization of forums tests.

Adresses TNL-3096

asadiqbal08/SOL-1152- Getting error on editing the certificate in deactivated mode.

Upgrading django-model-utils to 2.3.1

TNL-3126

add **kwargs to skip_signal method

Fix for Twitter compatibility

Add signals for user's discussion activity.

Muzaffar/tnl1930 teams accessibility

[PLAT -758] Making Call Stack Manager work in StudentModule and StudentModuleHistory, add @trackit, @wrapt dependency, and refine conditions

TNL-1930