Create new API endpoint for email optin

Updating the design of the email opt in end point.

Updating API call based on new Org Model.

Modify error message

Creating a new Organization based preference model.

Fix syntax-related PEP8 issues

should be 'if cond is True:' or 'if cond:'

should be 'if cond is None:'

between brackets

Add an endpoint for syncing a user's course status metadata

Remove ability to add new ORA 1 problems to courses

Fix continuation-related PEP8 issues

Fixed HD button in firefox.

TNL-536

LoginEnrollmentTestCase.setup_user: Attribute 'user' defined outside __init__

divide_chemical_expression: map/filter on lambda could be replaced by
comprehension

Command.handle: Invalid name "d" for type variable
(should match [a-z_][a-z0-9_]{2,30}$)

between brackets

for visual indent

for visual indent

for hanging indent

does not distinguish itself from next logical line

visual indentation

indentation of opening bracket's line

indentation or outdented

is not a multiple of four

JIRA: MA-75

Release

Imports must replace drafts w/ published in split

WL-99 send a copy of the invoice to the finance@edx.org when registration codes are generated

Use analytics.identify instead of the old utility function

PLAT-299

TNL-827