Trailing whitespace added to text of elements with namespaces

An issue I'm having is that when a tag contains a namespace it causes the closing tag of the element to drop to a new line and indent, which adds additional whitespace into the text.

```javascript
vkbeautify.xml('<root><child xmlns="ns">Text</child></root>');
```
Produces:
```xml
<root>
    <child 
        xmlns="ns">Text
    </child>
</root>
```
This pull request prevents that newline and indent from being added to elements when they have namespaces.
```javascript
<root>
    <child
        xmlns="ns">test</child>
</root>
```

Indentation should still be working correctly for elements nested in elements with namespaces.

```javascript
vkbeautify.xml('<root><child xmlns="ns"><test></test></child></root>');
```
Produces:
```xml
<root>
    <child
        xmlns="ns">
        <test></test>
    </child>
</root>
```

And thanks for making this great tool!