add simple help-modal-test
Allow SSL enforcement for OAuth2 provider to be configurable
Return OpenID Connect user name from user profile.
Content experiments update

comments from Anant
Merge pull request #5295 from edx/adam/add-simple-help-modal-test

add simple help-modal-test
Merge pull request #5318 from edx/markhoeber-doc936

Content experiments update
Merge pull request #5315 from rocha/fix-fullname-in-oauth2-handler

Return OpenID Connect user name from user profile.
Use default locale to OpenID profile claims.

If the user has not selected a default locale, then return the default one.
capa custom response support for decimal grades
Merge pull request #5314 from rocha/configurable-oauth-enforce-secure

Allow SSL enforcement for OAuth2 provider to be configurable
Merge pull request #5316 from rocha/use-default-locale-in-openid-claim

Use default locale to OpenID profile claims.
disabling test_video_start_time_and_end_time
Merge pull request #5331 from edx/clytwynec/disable_flaky_video_times_test

disabling test_video_start_time_and_end_time
Merge pull request #5048 from Stanford-Online/jbau/edx/custom-response-fractional-grades

capa custom response support for decimal grades
StaticContentServer middleware conforms closer to spec for byte range requests.

This commit makes the following changes:
1. If there are syntactic errors in the Range header, it is ignored and
the full content is returned. This conforms to the spec.
2. In case of multiple ranges in the header, the full content is returned.
This behavior differs from the spec which says that a multipart response
should be returned.

PLAT-104
Added tests for parse_range_header() in contentserver.

PLAT-104
Refactored ContentServer tests to use ddt.

PLAT-104