Array field main label

[Ducica]

There is a problem with ArrayField top level label (main label).

<FieldLabel htmlFor={fieldPath} icon={labelIcon} label={label} />

As there actually isn't an input to which the htmlfor corresponds, it is raising errors in the console

This seems to be semantically incorrect way to do things. Probably it would be best if it was wrapped in a <fieldset> tag and <legend> was used instead of the FieldLabel. If you think this is something worth changing, I could look into making a PR for it. Please let me know.