* add pytest decorator for skipping py3 test

* quality

* Remove full table scan of VerificationDeadline.

Before this commit, we were doing a full table scan of
student_verificationdeadline, loading the results into a giant
dict, and reading/writing that to the cache. This was fine when the
code was introduced and there were dozens of courses, but now that
we're over 12K courses, it's becoming a major performance issue for
the Student Dashboard.

This uses a subquery to the course enrollment table so that we're
only ever pulling back the deadlines to a student's enrolled courses
for any given request. It removes the cache access entirely.

INCR-392

INCR-388 python3 compatibility

INCR-389

INCR-367 Python 3 compatibility

INCR-371 Python 3 compatibility

INCR-355 python3 compatibility

Defaults to common.py CMS (OPS-4042)

INCR-383

INCR-372

INCR-362 python3 compatability

INCR-361 python3 compatibility

* INCR-460: Make compatible with Python 3.x and disable: import-error for urlparse

* INCR-460: Fixes for useless suppression

* INCR-449: Make compatible with Python 3.x

* INCR-449: Fixes for line long

Fixing dependency issues so that make upgrade can run

changes made to comply with pylint

INCR-368

INCR-349 python3 compatibility

INCR-363

INCR-357

INCR-345 python3 compatibility

INCR-336 python3 compatibility

Inlines all 36 discussion underscore templates

imported by lms/templates/discussion/_underscore_templates.html
to reduce file system load when displaying inline discussion blocks.

Ignored error where fix required changing the translated text string,
due to differences between underscore and HtmlUtils format strings.

update edx-proctoring package version to 2.0.6

Added logs for XQueue Information

Revert "INCR-343 Python 3 compatibility"

This reverts commit 87e58c86.