Import preview

[rhoerr]

Consider a tool to preview a template file and confirm before importing it.

This wouldn't apply to automated syncs, of course.

Pardon if this already exists and I missed it.

[dadolun95]

@rhoerr The only preview provided is the picture generated by pagebuilder saved on remote, if we need a more advanced preview management we need to think about a dedicated entity or pagebuilder templates extension.

[rhoerr]

The preview image could be good, even if it's not guaranteed accurate. I would be concerned about a live preview anyway if the goal is to provide a security and sanity check, since that could allow code injection.

Maybe show a modal with the image, and possibly an collapsed box for devs to view the template code.