Admin console - Folder reindex

As a system administrator, I can reindex the content of a folderish document (document and its children)
[REINDEX-FOLDER]

Context:
ES endpoint https://doc.nuxeo.com/rest-api/1/elasticsearch-endpoint/

AC
Within the elasticsearch reindex menu entry
An option is provided to reindex the content of a particular folderish document:

Tab name: "Folder"
Title
"Reindex a document and all of its children"

Parameters:

• Document ID (required)
  • Placeholder: Document ID

Errors are handled so that when a problem is detected:

• The error message coming back from the server is displayed. Sample errors that could happen:
  • Document id does not exist
  • Error returned by the server
• I can go back to the form and parameters are kept so that I can fix any mistake easily and try again

When a valid id is provided:

• Request is sent
• Confirmation is required, see [CONFIRMATION-REQUIRED] and [EXPLAINER-ES-REINDEXING-FOLDER]
• A confirmation is displayed with the outcome, e.g. "Document reindexing request launched. Bulk action id: [NUMBER]."
• A "Go back" action allows me to go launch another request. Fields have been reset so that I don't launch the same request twice by accident.