Search API - when to use keyword, order by issue

[trzcina]

Search API is based on ElasticSearch, but ES knowledge should not be necessary to use standard search functions.

Search docs: https://flotiq.com/docs/API/search/

Example request with order_by, according to docs:

1. Search all [works] https://api.flotiq.com/api/v1/search?q=*&auth_token=__TOKEN__
2. Search all ordered by created [error]: https://api.flotiq.com/api/v1/search?q=*&order_by=created&auth_token=__TOKEN__

Search all ordered by causes error:

        "q": [
            "Malformed query"
        ]
    }

We should use created.keyword (notice "keyword", that is not mentioned in docs)
https://api.flotiq.com/api/v1/search?q=*&order_by=created.keyword&auth_token=__TOKEN__
And it works fine.

Please add info on when should I use .keyword or refer to ES docs

[CiotkaCierpienia]

Resolved with #262