revert: reimplement read alongs's getImages() API#503

sergeleger merged 1 commit intomainReadAlongs/Studio-Web:mainfrom

dev.swl/502-a-removed-image-from-a-read-along-is-still-included-in-offline-html-exportsReadAlongs/Studio-Web:dev.swl/502-a-removed-image-from-a-read-along-is-still-included-in-offline-html-exportsCopy head branch name to clipboard