Merge pull request #4915 from chrisgarrity/4911-delete-icon

src/components/delete-button/delete-button.css

src/components/delete-button/delete-button.jsx

src/components/delete-button/icon--delete.svg

src/components/sprite-selector-item/sprite-selector-item.css

src/components/sprite-selector-item/sprite-selector-item.jsx

test/integration/sprites.test.js

...mponents/__snapshots__/sprite-selector-item.test.jsx.snap

test/unit/components/sprite-selector-item.test.jsx

test/unit/containers/sprite-selector-item.test.jsx