Added UrlInput component to tidy things up a little.

src/components/util/SmallError.jsx

@@ -0,0 +1,20 @@
+import React from 'react'
+import PropTypes from 'prop-types'
+import './SmallError.scss';
+
+
+class SmallError extends React.Component {
+  static propTypes = {
+    children: PropTypes.node,
+  }
+
+  render () {
+    return (
+      <div className="SmallError">
+        Error: {this.props.children}
+      </div>
+    );
+  }
+}
+
+export default SmallError

src/components/util/SmallError.scss

@@ -0,0 +1,7 @@
+@import '../../styles/vars';
+
+.SmallError {
+  color: #E57373;
+  font-size: $font-size-5;
+  margin-top: $margin-2
+}