added "type" attribute to editable "text" input elements

"type" attribute should be added even if type of element is "text"


```javascript
text: {
  element : function(settings, original) {
    var input = $('<input />');
    if (settings.width  != 'none') { input.width(settings.width);  }
    if (settings.height != 'none') { input.height(settings.height); }
    /* https://bugzilla.mozilla.org/show_bug.cgi?id=236791 */
    //input[0].setAttribute('autocomplete','off');
    input.attr('autocomplete','off');
    $(this).append(input);
    return(input);
  }
}
```

The reason is that many modern CSS frameworks use "type" attribute selector in CSS rules (even the most common framework - Bootstrap) to aply appropriate style.

And some browsers doesn't allow to change "type" attribute dynamically (due to security reasons) by javascript.

So by my opinion, we should add line 
```javascript
input.attr('autocomplete','off');
```
to definition of editable "text" input element.