Add layout editor

[galhavivi]

Add to react-editor the ability to add Item layout and download files.

[WangLarry]

@galhavivi
Layout editor is very cool!

Can not preview layout?

[galhavivi]

@WangLarry Thanks to your excel idea :)
though a future wish is to have sections edited more smoothly like this - https://clippings.github.io/layout-grid/

I deployed it, you can init the forms mock to see a form with data (But it might override your exiting local-storage forms data)
https://yahoo.github.io/jafar/demo-react-editor.html

[galhavivi]

@WangLarry
I thought about preview layout... the problem is that a form might have some "custom" needs - like custom components or custom validators, and preview might not work since not all resources for the form exists...
i guess we can add preview with the note that forms with custom resources not be previwed.. but it will be good for people who will use this package a template and adjust to have their custom resources loaded to the preview.. need to think about it

[WangLarry]

@galhavivi
I have tried to test layout editor.

BTW: another grid layout

[galhavivi]

@WangLarry
Cool ill open a ticket about it... lets see if anyone want to implement it, since its not very urgent :)