Added topline component and fixed string interpolation

client/src/components/ui/Topline.css

@@ -1,4 +1,4 @@
-.update {
+.topline {
     position: relative;
     z-index: 102;
     margin-bottom: 0;

client/src/components/ui/Topline.js

@@ -0,0 +1,19 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+import './Topline.css';
+
+const Topline = props => (
+    <div className={`alert alert-${props.type} topline`}>
+        <div className="container">
+            {props.children}
+        </div>
+    </div>
+);
+
+Topline.propTypes = {
+    children: PropTypes.node.isRequired,
+    type: PropTypes.string.isRequired,
+};
+
+export default Topline;

client/src/components/ui/Update.js

@@ -1,19 +0,0 @@
-import React from 'react';
-import PropTypes from 'prop-types';
-
-import './Update.css';
-
-const Update = props => (
-    <div className="alert alert-info update">
-        <div className="container">
-            {props.announcement} <a href={props.announcementUrl} target="_blank" rel="noopener noreferrer">Click here</a> for more info.
-        </div>
-    </div>
-);
-
-Update.propTypes = {
-    announcement: PropTypes.string.isRequired,
-    announcementUrl: PropTypes.string.isRequired,
-};
-
-export default Update;