Performance enhancements for unit tests

Dont' need error check call in old mongo on this test

pylint cleanup.

Added handling in gitlog template for missing import logs

Consistently wrap the DataDog API to prevent logged errors & missing stats data

Upgrade pymongo

Fixes a template error that occurs when viewing a course's detailed
git import log. The problem happens for courses imported using methods
other than the `git_add_course` command.

Small changes to the segment.io event handler

Updates 10-7 release notes

Don't show cohort information when disabled

Make sure temporary course directory uses safe characters.

was breaking pymongo 2.7

LMS-11437

in test_contentstore, don't load the xml course if not necessary

secure-cookies: Allow to use secure HTTPS cookies (Django setting)

Merge Release

Use Backbone for student account and profile JS.

Adding new styles to the new donation button.

Forum shouldn't cuase error while searching unicode

If we use unicode character in the search of forum
it will cuase the error which is not the desired
behavior it should check and return result.

TNL-336

Generate HAR Files for LMS

Hotfix for 2014-10-08

Validate student account and profile form fields. Use RequireJS for Jasmine tests of account and profile JS.

TNL-552

Sort course and enrollment pairs on dashboard

Update donation text in email and receipt page

Fix unicode-related failures in CSV upload.