Xhrjs (status.htm LuCI/XHR.js)

proposed changes for issue #18 
does not include a fix for when users submit/apply null peer details. (click add, click apply with new empty row)
![bytesio](https://cloud.githubusercontent.com/assets/5460439/3943917/26500a50-25d8-11e4-800d-ab6f30543fd4.png)


Can you make that .textContent instead of .innerHTML :) ?