ECOM-1476: sending email on software secure response initial work

Exclude filtering for microsite orgs

Updated Take Photo page to include verification requirements

As part of the unification of verify later/now, the take photo page needs to list the verification requirements.

XCOM-254

Add params to CS query in thread list endpoint

The thread list endpoint needs to restrict the set of threads it
retrieves if the course is cohorted and the user is not privileged.
This also adds an explicit default sort (by most recent activity).

(SOL-776)(SOL-740)(SOL-532) Prerequisites for course discovery feature

add lettuce features to the omitted directories in coveragerc files

Clean up keyword_substitution.py

Make user_track use eventtracking

add custom PayPal payment button and js tests for buttons.

Hiding Billing Address for Orders without Billing Addresses

fix ecommerce api calls in verify_student and add tests.

Problem builder version bump [OSPR-575]

Problem builder version bump: includes presentation updates and accessibility improvements [OSPR-575]

(SOL-776)(SOL-740)(SOL-532) Added setting flags for COURSE DISCOVERY feature; Exposed course search input as well as the course result page; Added flag for limiting the number of course cards on the homepage;

change photo reverification page heading from h3 to h1

XCOM-287

XCOM-270

Update docstring and remove unused import
This is cleanup after edx/edx-platform#7605

Some orders, specifically those paid for with PayPal, do not have a billing address. This information will not be rendered in such cases.

Clytwynec/unique dirs for test results

Paver: Ability to run only servers or only tests

Enable unit preview by default.

Bok-choy on chrome: fix sequence for adding user to team.

TE-849

This passes fine in firefox; however in chrome, the click is occurring before
the page is ready; and then the click itself is not specific enough. Also
refactored the add button method so it more-clearly returns the expected
end-state.

This would allow a user to set up and run servers, with an open prompt for killing
them. Likewise a user could open a different terminal session and run tests only.

How-to:
* At a terminal/ssh session, start bok-choy servers with
    `paver test_bokchoy --serversonly`
    (or, if you've already run collectstatic on your system:
    `paver test_bokchoy --serversonly --fasttest`)
* When the above is running, you can now open a separate terminal/ssh session
and run:
    `paver test_bokchoy -t my_tests --testsonly`

Keep in mind, the 'testsonly' flag does no setup. There is some minimal teardown; however,
such as clearing mongo and flushing the lms database. (Some tests have non-unique identifiers
and could not be run more than once.)

Conflicts:
	scripts/jenkins-report.sh

Feanil/release merge test

Fixes index function to not index children without published version - Thank you @dino-cikatic!

Mark test as flaky. TNL-1619

On faster browsers, we need to wait for the toggle option to appear.

[LTI Provider] Updating submissions dependency to pull in new scoring signals

ECOM-1470