ECOM-2552

ECOM-2554

* Fix paver violations to stablize edx-lint update
* Parens, Line2Long
* Fix missing docstrings
* Fix PEP8 issues
* Address PR feedback (thanks @nedbat!)

Some strings were using both python-style {} placeholders as well
as javascript-style %()s placeholders. That can be confusing for
translators.

Replace the python-style placeholder with a %()s one and interpolate
the value using javascript.

Only the course number was displayed in the course unenrollment
confirmation popup dialog.

Include full course display name to make it more user friendly.

remove link style, add pointer, adjust spacing on profile

TNL-3297

The test was not running where it lived before.

The previous value means that those dates would have the value of
whenever the models were imported.

Reference TNL-3611

ECOM-2551

Entrance Exam.

unit test to check presence of entrance_exam_passed

changed based on Matt's feedback

changes after Asad's feedback

ECOM-2450

* talbs: Remove obsolete stuff
* frrrances: remove base and distinguished sass references and image assets
* mattdrayer: Cleaned up JSON syntax for test setups

Clarify and reformat some comments; rename a few functions to clarify those.

Convert tabs to spaces.

Fix inaccurate comment

Fixed jshint issues

Adjust how user-select is applied to the gradebook view. Add i18n for a string.

Allow selection when not dragging.

round before converting a decimal into integer

The heart of this fix is to change the "My Team" view to use a
collection of teams instead of memberships. The team card is
refactored to only take a team, rather than attempt to be polymorphic
over teams and team memberships. This change enabled removing a good
amount of old code. This also requires adding a `username` parameter
to the teams list endpoint which allows getting a list of all teams
for a single user, in order to allow refreshing the "My Teams" view
correctly. Currently this list is of length at most one.

TNL-3410

TNL-3247

Removed remaining synchronous AJAX calls from discussions
Updated the profile view tests to use an attached view for testing
Removed one-time JQuery intiialization that could fail and break multiple tests