Update credit services to gracefully handle operations on a course which is actually not credit enabled

Add sorting by team_count, as well as secondary sort (by name).

Release 2015 08 18 conflict

TNL-3071

This reverts commit cea274dc, reversing
changes made to 02cf9cac.

Only let global staff (is_staff=True) see the Proctoring tab in the Instructor Dashboard if the feature flag is enabled.

By doing this, we can prevent the bug where multiple users can join
a team simutaneously and push its enrollment over the defined
maximum value. Tests have also been added to confirm this behavior.

TNL-3061

Specify course key when retrieving credit requirements.

Use 0.1.3 of i18ntools

TNL-3012

Adding django admin command to create mongodb indexes

Change default donation amount to $10.

Merge pull request #9371 from edx/tasawer/story/ecom-1956-updte-validation-message-on-registration-page

Updating validation error message on signup page.

ECOM-2113

ECOM-1956

Clean up the Django ORM usage a bit

Resolved decompression errors during tests

Fix an exception that could occur if a user had completed
the final grade credit requirement in > 1 course.

Add a new last_activity_at field.

Style issues on the credit status in the dashboard

TNL-3068

User state client metrics

Note that this change will require deleting all CourseStructure data. This data should be regenerated using the generate_course_structure management command.

XCOM-513

SOL-1125: fix for organization id drop down not populating

Expand instructor definition

By moving the team_page.first_member_username access to occur before
click_first_profile_image() is called, we avoid a potential issue
where the wrapper() method defined in page_object.py, which
decorates the property, calls into _verify_page() and raises a
WrongPageError.

ECOM-2117

The stale flag needs to take into account its previous state.

Per discussions, for the purposes of the teams API, an 'instructor'
is any of:
	-course staff
	-global staff
	-discussion privileged users
This change will include the last case, which previously did not have
instructor access. Changes will be documented on the teams API wiki:
https://openedx.atlassian.net/wiki/display/TNL/Team+API

Tests have also been added to confirm this functionality.

TNL-2984

Otherwise it can change from false to true without re-rendering. TNL-3072

Fixed explicit label issues related to CCX accessibility

Release

Changes to a CCX course should emit a course_published event

Instructor Dashboard: Display info about course timeline