Ensure that course_about uses a valid course ID

[ENT-210] Remove unnecessary pipeline element; use new name for existing element

Update Peer Instruction XBlock to 0.6.2

Move more tests to use bulk_operations

LMS startup optimization: lazy load pynliner

Benp/fix tnl-6040

Related changes https://github.com/ubc/ubcpi/pull/111

Cleaner grades exception handling

pynliner imports cssutils, which has an expensive initialization. All
told, it can account for 15-20% of "fast" LMS startup (without asset
compilation). So we're going to load it locally here so that we delay
that one-time hit until we actually do the (rare) operation that is
sending a credit notification email.

PLAT-1104 Import courses asynchronously

[ENT-208] Update AWS ENTERPRISE_ENROLLMENT_API_URL variable

Remove dealer.git use for LMS.

Update ora2 and submissions

ENT-162 Create an EnterpriseCourseEnrollment during the enrollment flow

Discussion topic area section after Add Post

short circuit on library publish; for TNL-6297

Remove Profile XBlock.

Change edx-django-release-util version.

We use the dealer.git library to determine the current revision of
edx-platform at startup time and store that as EDX_PLATFORM_REVISION in
our settings. This can take a surprisingly long time and involve a lot
of disk IO to initialize.

Studio still needs this functionality because it determines its static
asset folder based partly on the hash. This is horrible, because it
means all static assets are invalidated on every release instead of
just the ones that change. But that will be the subject of a different
PR.

Find the courses a user has certs for up front.

Before this commit, we had to do a separate query for every course a
user was enrolled in when determining whether a course was refundable
(if you have a certificate, it isn't). Now the student dashboard will
make a one-time query to grab all of a user's cert-issued courses. This
is indexed, so it should be much faster than grabbing each one
separately.

ECOM-7099

ECOM-7099

Storage-backed versioned Block Structures: Config

Student Dashboard CourseOverviews with one query.

Pre-load the course overviews attached to CourseEnrollments on the
Student Dashboard, if possible. This will only grab the CourseOverviews
that already exist, and will not generate new ones. Any missing
CourseOverviews fall back to the lazily-created one-at-a-time behavior
they've always had. That's mostly because I wanted to optimize for the
common case in the least invasive way possible, and I don't want to get
caught up in locking issues.

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