feat: do not force picture to be link if it has external image

[wesleyboar]

Overview

A Picture that has an external image usually becomes a link, until now.

This adds a Template for picture that lets admin prevent link.

Related

• requires feat: cards as links Core-Styles#485
• required by feat(cep): portal list Core-CMS-Custom#444

Changes

• updates core-styles
• adds setting to customize Picture template choices
• adds blocks to default Picture template
• adds new template for Picture

Testing

1. Create Link.
2. Create Image/Picture in link.
3. Set External Image for Image/Picture instance.
4. Verify the Image/Picture renders inside Link i.e. is not extracted and given its own link.

UI

After Core-Styles v2.41.0

Image Creates Link to Image vs. Link as a Card links Card+Image to Path

(problem) media in card links to media	(solution) link as a card links to path

Use Image/Picture Template

(problem) media in card links to media	(solution) link as a card links to path

card.as.link.mov

Before Core-Styles v2.41.0

not styled yet	styled (requires TACC/Core-Styles#485)
	…