auth: add slugs and auth redirects

ui/pages/_internal/_server.js

@@ -3,8 +3,17 @@ import * as React from 'react'
 import Head from 'next/head'
 import type { PageProps } from '../../types'
 import SocialCards from '../../components/social-cards'
+import redirect from '../../lib/redirect'
 
 export default class Server extends React.Component<PageProps> {
+  static async getInitialProps (ctx: *, rpc: *, router: *) {
+    if (ctx.user == null) {
+      redirect(ctx, `/auth/login?r=${router.asPath}`)
+    }
+
+    ctx.robots = 'NOINDEX, NOFOLLOW'
+  }
+
   render () {
     return (
       <div>