Fixes welcome page input Enter button action.

app.js

         $("#videoconference_page").hide();
         $("#domain_name").text(window.location.host + "/");
         $("span[name='appName']").text(brand.appName);
-        $("#enter_room_button").click(function()
+        function enter_room()
         {
             var val = $("#enter_room_field").val();
             if(!val)
                 val = $("#enter_room_field").attr("room_name");
             window.location.pathname = "/" + val;
+        }
+        $("#enter_room_button").click(function()
+        {
+            enter_room();
         });
 
         $("#enter_room_field").keydown(function (event) {
             if (event.keyCode === 13) {
-                var val = Util.escapeHtml(this.value);
-                window.location.pathname = "/" + val;
+                enter_room();
             }
         });
 

index.html

                     <div id="enter_room_form" >
                         <div id="domain_name"></div>
                         <div id="enter_room">
-                            <input id="enter_room_field" type="text" placeholder="Enter room name" />
+                            <input id="enter_room_field" type="text" autofocus placeholder="Enter room name" />
                             <div class="icon-reload" id="reload_roomname"></div>
                             <input id="enter_room_button" type="button" value="GO" />