Add a section "More like this" to the course detail page

[sampaccoud]

Feature Request

Is your feature request related to a problem or unsupported use case? Please describe. At the bottom of a course detail page, we should display related courses:

• more like this
• in the same category
• by the same organization
• by the same teacher

Describe the solution you'd like For more like this, we can use the dedicated Elasticsearch query