Generate unique id's for editor form fields

[erquhart]

- Do you want to request a feature or report a bug?

improvement

- What is the current behavior?

Many form fields in the editor lack id's, which is an a11y issue.

- What is the expected behavior?

Form fields should have unique ids to connect them with labels.

Considerations:

• Fields can be nested within object fields, and rich text editor plugins also have form fields. There's no unique to use from all places, so we should probably use something like lodash.uniqueId.

[xifengjin88]

Hello, I would like to work on this issue. Is it available to work on?

[erquhart]

@xifengjin88 sure is! If you have any questions, feel free to comment here or reach out in Gitter :)

[xifengjin88]

@erquhart Thanks!!!