Change scroll behavior

Only scroll the torrent list, not the whole document

style/trweb.css

@@ -1,5 +1,7 @@
 .trweb_torrentlistview {
     background-color: cadetblue;
+    overflow-x: clip;
+    overflow-y: auto;
 }
 .trweb_torrentlistentry:nth-child(3n-1) {
     background-color: darkcyan;