Merge pull request #1346 from paulkaplan/sound-hotfix

package.json

src/containers/sound-editor.jsx

test/helpers/selenium-helper.js

test/integration/blocks.test.js

test/integration/costumes.test.js

test/integration/examples.test.js

test/integration/localization.test.js

test/integration/project-loading.test.js

test/integration/sounds.test.js

test/integration/sprites.test.js

test/integration/test.js