Merge remote-tracking branch 'upstream/master' into feature/accessibility-list-reorder

Conflicts:
	src/components/App.jsx

src/components/layers/LayerList.jsx

@@ -178,6 +178,7 @@ class LayerListContainer extends React.Component {
         <div className="maputnik-default-property">
           <div className="maputnik-multibutton">
             <button
+              id="skip-menu"
               onClick={this.toggleLayers.bind(this)}
               className="maputnik-button">
               {this.state.areAllGroupsExpanded === true ? "Collapse" : "Expand"}