Merge pull request #1243 from thisandagain/feature/1036

package.json

src/containers/backdrop-library.jsx

src/containers/blocks.jsx

src/containers/controls.jsx

src/containers/costume-library.jsx

src/containers/extension-library.jsx

src/containers/paint-editor-wrapper.jsx

src/containers/sound-editor.jsx

src/containers/sound-library.jsx

src/containers/sprite-library.jsx

src/index.jsx

src/lib/analytics.js

src/lib/project-loader-hoc.jsx

src/reducers/modals.js

test/unit/containers/sound-editor.test.jsx

test/unit/util/project-loader-hoc.test.jsx