Add offers, priceCurrency and price to RDFa on course detail page/screen;

[igobranco]

Task of: openfun/richie#2451

Related to PR

[Tiago-Salles]

Must have for now

• Add CourseRun additional information to serializer ReactPropsCourseRunSerializer
• Get currency symbol using priceCurrency
• Add CourseRun additional information to SyllabusCourseRun
• Add CourseRun additional information to SyllabusCourseRunCompacted
• Receive CourseRun information to create or update one
• Insert the new fields to React CourseRun factory
• Adjust partially free message to be the same of the free case
• Remove default offer and make it possible to be null and blank
• Create conditions to show the prices according to the offers
• On the admin the management of showing prices information, is done by inserting the values.
• Add a method on the Course level that returns a json based on offers format considering their CourseRuns for RDFA purposes.
• Add price fields to the admin tests
• Apply the CourseRuns RDFA json in the Course page (define the best position to inject this information)
• In course card add the offer information using icon (check icon), for the free and partially free.

What we won't do for now

• Add toggle on the admin page to enable or disable these fields
• In the CTA button with login, change from "Log in to enroll" to "Log in to enroll for free" (Faça login para se inscrever gratuitamente)
• In the CTA button without login, change from "Enroll now" to "Enroll now for free" (Inscreva-se já gratuitamente)

[Tiago-Salles]

Check the need of hide information about the prices if does not exist. It is more clear if shows the information even free.

paid and free

paid and paid

partially free

free and free

price and null

null and price

null and null