Merge pull request #1375 from noesya/better-layout-choice

...ets/images/communication/blocks/templates/agenda/grid.png

...ts/images/communication/blocks/templates/agenda/large.png

...ets/images/communication/blocks/templates/agenda/list.png

...munication/blocks/templates/chapter/accent_background.png

...communication/blocks/templates/chapter/alt_background.png

.../communication/blocks/templates/chapter/no_background.png

...mages/communication/blocks/templates/gallery/carousel.png

...ts/images/communication/blocks/templates/gallery/grid.png

...ges/communication/blocks/templates/organizations/grid.png

...images/communication/blocks/templates/pages/alternate.png

...ets/images/communication/blocks/templates/pages/cards.png

...sets/images/communication/blocks/templates/pages/grid.png

...ets/images/communication/blocks/templates/pages/large.png

...sets/images/communication/blocks/templates/pages/list.png

...images/communication/blocks/templates/posts/alternate.png

...sets/images/communication/blocks/templates/posts/grid.png

...images/communication/blocks/templates/posts/highlight.png

...ets/images/communication/blocks/templates/posts/large.png

...sets/images/communication/blocks/templates/posts/list.png

...es/communication/blocks/templates/timeline/horizontal.png