SSL: local issuer certificate problem

Problem/Motivation

If the targeted website has a local SSL certificate issuer you will get this error:
cURL error 60: SSL certificate problem: unable to get local issuer certificate

Proposed resolution

Add an option into the Query settings form to ignore SSL verification.

1. Add new field into Query settings form checkbox `ignore_verify_host` to `Ignore verify host SSL`
1. Getting this new field value from `ViewsJsonQuery.php` `fetchFile()`
1. Add `'verify' => false` into used httpClient when fetch the URL.