try to support hidden ssids

html/wifi/wifi.html

@@ -28,6 +28,10 @@
                enter the password, and hit the connect button...</legend>
             <label>Network SSID</label>
             <div id="aps">Scanning... <div class="spinner spinner-small"></div></div>
+            <label for="opt-hiddenssid">
+              <input type="radio" name="essid" value="" id="opt-hiddenssid">
+              <input type="text" value="">
+            </label>
             <label>WiFi password, if applicable:</label>
             <input id="wifi-passwd" type="password" name="passwd" placeholder="password">
             <button id="connect-button" type="submit" class="pure-button button-primary">Connect!</button>