Refactored ErrorNotification/ErrorPage

Added i18n for error codes

scm-ui-components/packages/ui-components/src/ErrorPage.js

@@ -1,6 +1,7 @@
 //@flow
 import React from "react";
 import ErrorNotification from "./ErrorNotification";
+import { BackendError } from "./errors";
 
 type Props = {
   error: Error,
@@ -10,18 +11,26 @@ type Props = {
 
 class ErrorPage extends React.Component<Props> {
   render() {
-    const { title, subtitle, error } = this.props;
+    const { title, error } = this.props;
 
     return (
       <section className="section">
         <div className="box column is-4 is-offset-4 container">
           <h1 className="title">{title}</h1>
-          <p className="subtitle">{subtitle}</p>
+          {this.renderSubtitle()}
           <ErrorNotification error={error} />
         </div>
       </section>
     );
   }
+
+  renderSubtitle = () => {
+    const { error, subtitle } = this.props;
+    if (error instanceof BackendError) {
+      return null;
+    }
+    return <p className="subtitle">{subtitle}</p>
+  }
 }
 
 export default ErrorPage;