* lint amnesty in teams,tests,survey and verify_student

* Generate common/djangoapps import shims for LMS
* Generate common/djangoapps import shims for Studio
* Stop appending project root to sys.path
* Stop appending common/djangoapps to sys.path
* Import from common.djangoapps.course_action_state instead of course_action_state
* Import from common.djangoapps.course_modes instead of course_modes
* Import from common.djangoapps.database_fixups instead of database_fixups
* Import from common.djangoapps.edxmako instead of edxmako
* Import from common.djangoapps.entitlements instead of entitlements
* Import from common.djangoapps.pipline_mako instead of pipeline_mako
* Import from common.djangoapps.static_replace instead of static_replace
* Import from common.djangoapps.student instead of student
* Import from common.djangoapps.terrain instead of terrain
* Import from common.djangoapps.third_party_auth instead of third_party_auth
* Import from common.djangoapps.track instead of track
* Import from common.djangoapps.util instead of util
* Import from common.djangoapps.xblock_django instead of xblock_django
* Add empty common/djangoapps/__init__.py to fix pytest collection
* Fix pylint formatting violations
* Exclude import_shims/ directory tree from linting

* Edit team manage to check sizes at end of import

* Fix size validation to take new teams into account

* Remove redundant max size check

* Consolidate team membership counters

* Remove unused user_ids_by_teamset_id set

* Fix team removal to only occur after validation

* Update team full error message

* Prefetch users when looking up team counts

* use external_user_key in teams csv download

EDUCATOR 5065 - CR comments 3

EDUCATOR-4990 - Modify team membership via CSV upload. Slight refactoring - removal happens post static validation

cr1

cr2

cr3

cr3-remove unused var

EDUCATOR-4943 - update error message. cr1

EDUCATOR-4943 - update error message. cr2

unit tests

readability

* Check learner enrollment status to avoid mixing learners from incompatible tracks (e.g. masters/audit) to the same team
* When a new team is encountered on a team management CSV, create it with the protection status of the user

* Add error banner for upload memberships errors

* Edit error message language

* Fix linter warnings

fix csv-upload bugs

* wip

* get

* quality

* change oauth2 to deprecated?

* quality

* remove duplicate enrollment check function

* code review

interim commit

clean up

Initial unit tests and pylint

pylint cleanup

Unit tests extended and passing. Pylint

WIP - fix Unit tests extended and passing. Pylint

Updated logic to validate before commit.

CR pass1

CR pass1, pep8

pep8 2

interim cr

interim cr2

refactor to using DictReader

removed uneeded mixin

pr comments

encoding fix and return value

Cache teams/membershipos

ncr

cr aed

Adds "Manage" sub-tab to course "Teams" tab
with UI for downloading and uploading team
membership CSVs. The upload and download function-
ality are currently not implemented.

The new tab only appears when the user is course staff
and the course has at least one instructor-managed
team-set, which is not the case for any existing
courses, so not current course staff will see this
change.

This ticket will be followed-up upon in MST-44 and
MST-49.

MST-41