Lint rules and flow annotations for rest of the files

server/utils/renderpage.js

@@ -10,9 +10,7 @@ const sheet = new ServerStyleSheet();
 export default function renderpage(ctx: Object, children: React$Element<*>) {
   const html = ReactDOMServer.renderToString(
     <StyleSheetManager sheet={sheet.instance}>
-      <Layout>
-        {children}
-      </Layout>
+      <Layout>{children}</Layout>
     </StyleSheetManager>
   );
 

server/utils/updates.js

@@ -16,7 +16,10 @@ export default async () => {
     'SECRET_KEY or URL env var is not set'
   );
   const secret = process.env.SECRET_KEY.slice(0, 6) + process.env.URL;
-  const id = crypto.createHash('sha256').update(secret).digest('hex');
+  const id = crypto
+    .createHash('sha256')
+    .update(secret)
+    .digest('hex');
 
   const [
     userCount,