Harry rein/updating bootstrap theming

Add pyinotify to development requirements for docker devstack perf

LEARNER-1785

This story was to update the existing custom themes to work with the flexible bootstrap design. It also updates the red theme to more closely resemble the real implementation on openedx.

Django can use pyinotify for watching files in runserver which should
save a lot of CPU work in docker.

Update version of edx-organizations.

Allow enrollment into expired seats if the api is called by ECOM service

Use platform_name instead of site_name in password reset email

Add COURSE_CATALOG_API_URL settings value to devstack_docker

Staubina/ed 592

Disable Git Import view for professor's who are not staff

Merge release back to master

EDUCATOR-772

Fix EDUCATOR-269: Don't show "Issue Open Badges" if the feature is disabled

Reason: Before this fix, if the user is not staff (user.is_staff=0) and ENABLE_SYSADMIN_DASHBOARD=True
happens that the user can access the Git Import in Sysadmin dashboard and get to see the links in the menu
of the sysadmin dashboard (Users, Courses, Staffing and enrollment). When this user clicks on one of
these links, it gets an error from the server.

Create REST API for importing a course

Remove last Mustache usage.

Limit requests urllib3 logging to quiet log spam

Update names to be more consistent.

Upgrade help-tokens to 1.0.3

Upgrade django-crum to 0.7.2

LEARNER-1669

Merge pull request #15532 from edx/mroytman/PLAT_1487_django_1.11_upgrade_edx-django-sites-extensions

upgrade edx-django-sites-extensions from 2.1.1 to 2.3.0

PLAT-1629 Retry abspath() failures

Dont fetch captions while fetching translations

fix styling issues in program details page

LEARNER-1115

This fixes the endless loop of fetchCaptions ajax requests. fetchCaption on error calls fetchAvailableTranslations which again calls fetchCaption on success and so on. We don't see any significance for calling fetchCaption in fetchAvailableTranslations.

EDUCATOR-810 fix UnicodeDecodeError

Adding the capability to write reviews to the reviews page.

It accounts for a large chunk of our splunk logs and is often
repetitive.  See forums connections which on a sandbox do:

```
Starting new HTTP connection (1): localhost
```
and
```
comment_client_request_log: request_id=06ac65d3-61b9-4882-9edb-c6b65709318a, method=get, url=http://localhost:18080/api/v1/users/5, duration=0.0101051330566
```

Add this for any other IDA call.

LEARNER-1628

This allows enrolled users to write reviews on the reviews page that
can be accessed through the course tools sidebar. A button in the top
corner of the page toggles the widget that is configured with a
setting in the common.py file. The reviews tool is Course Talk.