MBS-12748: Convert area edit form to React

[Serial-ATA]

Problem

Solving MBS-12748, converting the area edit form and creation page to React.

Solution

• Conversion of root/area/edit_form.tt to React
  • Mostly a copy of the EventEditForm component
• Conversion of root/area/create.tt to React
• Split the type bubble into a separate component (root/static/scripts/common/components/TypeBubble.js) to share between the event edit form and the area edit form
• Translated the ISO 3166 validation functions in Server/Validation.pm to JS in root/static/scripts/edit/utility/iso3166.js
• Updated FormRowTextListSimple to take an optional dispatch function, so that the ISO 3166 codes can be validated in real time

Testing

I've tested creating areas on /area/create, and editing existing areas on /area/xxx/edit. I've tested that the area types are all present and can be set, invalid ISO 3166 codes are rejected, and multiple codes can be added.

[Serial-ATA]

The area editing test is failing, I'll take a look soon

[reosarevok]

It seems from the test failure that editing the area is also removing its type (type_id now appears both in old and new). IIRC, that's because in the tests you need to specify the same type as it already has, otherwise values in selects get lost for some reason.

The flicker of the type bubble you might be seeing should be solved by 0d6b18a (feel free to cherry-pick it if you want it).

The ISO validation errors should probably disable form submission. In the recording PR I'm doing const hasErrors = hasSubfieldErrors(state.form) - something like that probably makes sense?

In general this seems to work quite well!