Don't require lowercase sort order

Currently this will not return 3... 2... 1...



    #!/bin/sh
    
    curl -s -XDELETE localhost:9200/test >/dev/null
    
    curl -s -XPUT localhost:9200/test/t/uno -d '{"wat": 1}'; echo
    
    curl -s -XPUT localhost:9200/test/t/dos -d '{"wat": 2}'; echo
    
    curl -s -XPUT localhost:9200/test/t/tres -d '{"wat": 3}'; echo
    
    curl -s -XPOST localhost:9200/test/_refresh\?pretty=1; echo
    
    curl -s localhost:9200/test/_search\?pretty=1 -d '
    {
        "query": {
            "match_all": {}
        }, 
        "sort": [
            {
                "wat": {
                    "order": "Desc"
                }
            }
        ]
    }
    '; echo