user: Bootstrap listers high-level documentation
Add landing page of listersrs high-level documentation displaying available ones in a table with the following column:
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logo and name of the lister linking to its specific documentation
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related links: source code, developer doc, development activity
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current status: production, staging or development
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link to related grant if any
Create one rst file per lister to further document.
Related to #3117
Depends on !220 (closed)
Migrated from D7638 (view on Phabricator)