redirect signed out users on /profile and /trades to homepage

web/pages/profile.tsx

@@ -1,5 +1,6 @@
 import { useEffect, useState } from 'react'
 import { PencilIcon } from '@heroicons/react/outline'
+import Router from 'next/router'
 
 import { AddFundsButton } from '../components/add-funds-button'
 import { Page } from '../components/page'
@@ -83,6 +84,11 @@ export default function ProfilePage() {
       })
   }
 
+  if (user === null) {
+    Router.replace('/')
+    return <></>
+  }
+
   return (
     <Page>
       <SEO title="Profile" description="User profile settings" url="/profile" />

web/pages/trades.tsx

@@ -1,3 +1,5 @@
+import Router from 'next/router'
+
 import { BetsList } from '../components/bets-list'
 import { Page } from '../components/page'
 import { SEO } from '../components/SEO'
@@ -7,6 +9,11 @@ import { useUser } from '../hooks/use-user'
 export default function TradesPage() {
   const user = useUser()
 
+  if (user === null) {
+    Router.replace('/')
+    return <></>
+  }
+
   return (
     <Page>
       <SEO title="Your trades" description="Your trades" url="/trades" />