Add torrent fetching on the torrent page

frontend/js/components/torrents/list.js

@@ -1,4 +1,4 @@
-import React, { useState } from "react"
+import React, { useState, useEffect } from "react"
 import PropTypes from "prop-types"
 import { Map, List } from "immutable"
 import { connect } from "react-redux"
@@ -11,9 +11,19 @@ const mapDispatchToProps = {
   fetchTorrents, addTorrent, removeTorrent,
 };
 
-// TODO: fecth every x seconds
 const TorrentList = (props) => {
   const [fetched, setIsFetched] = useState(false);
+
+  useEffect(() => {
+    const intervalID = setInterval(() => {
+      props.fetchTorrents();
+    }, 10000);
+
+    return () => {
+      clearInterval(intervalID);
+    };
+  });
+
   if (!fetched) {
     props.fetchTorrents();
     setIsFetched(true);