Background gradients, migrate from CSS to SCSS, remove !important

client/src/containers/CoreWrapperContainer.js

@@ -0,0 +1,14 @@
+import { connect } from 'react-redux';
+
+import { isCoreInitializingSelector } from '../selectors';
+import CoreWrapper from '../components/CoreWrapper';
+
+const mapStateToProps = (state) => {
+  const isCoreInitializing = isCoreInitializingSelector(state);
+
+  return {
+    isInitializing: isCoreInitializing,
+  };
+};
+
+export default connect(mapStateToProps)(CoreWrapper);