Use ui:widget: 'hidden' widget type in array fields

[mike391]

Prerequisites

• [X ] I have read the documentation;
• [X ] In the case of a bug report, I understand that providing a SSCCE example is tremendously useful to the maintainers.

Description

Currently 'hidden' widget types only work for sting, integer, boolean and number fields. Array needs a hidden widget type as well.

Resolved behavior

ui:widget: 'hidden' should be able to be used for 'array' type fields.

[lukaskuzmiak]

+1

[gerswin]

+1

[koosham]

@epicfaace This feature (hidden arrays) doesn't work with Material UI.

[epicfaace]

@koosham could you please make a new issue for that? Thanks!