Add listing to gridAllowedBlocks

[Fosten]

Enable a Listing in the Grid Block

plone.org/frontend/src/config/index.js

Lines 105 to 108 in 248d4b0

	config.blocks.blocksConfig.__grid = {
	...config.blocks.blocksConfig.__grid,
	gridAllowedBlocks: ['teaser', 'image', 'slate', 'html'],
	};