Fallback sql view

[tleekkul]

fostgres.sql view should be able to set the fallback view when no path is matched.

Example

        {
            "view": "fostgres.sql",
            "configuration": {
                "sql": [{
                    "return": "object",
                    "path": [1],
                    "GET": "SELECT * FROM user WHERE user=$1"
                }],
                "fallback": {
                    "view": "fost.response.302",
                    "configuration": {"location": "some-views"}
                }
            }
        }