Merge branch 'develop' into fix-tests-on-windows

.travis.yml

package.json

scripts/generate-locale-messages.js

src/components/gui/gui.jsx

src/components/loupe/loupe.css

src/components/loupe/loupe.jsx

src/components/sound-editor/sound-editor.jsx

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

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

src/components/stage-selector/stage-selector.jsx

src/components/stage/stage.css

src/components/stage/stage.jsx

src/components/turbo-mode/turbo-mode.jsx

src/containers/blocks.jsx

src/containers/costume-tab.jsx

src/containers/sound-tab.jsx

src/containers/stage.jsx

src/lib/make-toolbox-xml.js

src/locale.js

src/reducers/color-picker.js