webrepl.html: Focus terminal widget on connect.

Author: Paul Sokolovsky

webrepl.html

@@ -90,6 +90,8 @@
             document.title = title;
         });
 
+        term.focus();
+        term.element.focus();
         term.write('\x1b[31mWelcome to MicroPython!\x1b[m\r\n');
 
         ws.onmessage = function(event) {