MDIMs: Metadata for views with multiple indicators

[lucasrodes]

MDIMs that have a view with multiple indicators, only shows metadata of one indicator around the chart.

See Example

Long-term solution

We need to re-design bits of MDIM pages to allocate for metadata of multiple indicators in the same page.

Short-term solution

Long-term solution might take some time from now, so I suggest we look into 'hacking' the configuration of MDIM view metadata from ETL.

How?

We can override the configuration of an MDIM view using the metadata field:

https://github.com/owid/etl/blob/master/schemas/multidim-schema.json#L336

https://github.com/owid/etl/blob/master/schemas/multidim-schema.json#L343!

Whatever is specified here will take precedence over the metadata of the indicator, fetched via the API.

This is done precisely so that for multi-dimensional indicators you can specify "use exactly these 4 bullet points as description_key".

[pabloarosado]

Quick comment: Maybe it would be good to review the logic we implemented in owid.catalog on how to combine metadata from different indicators.