Bug: automatic addition of the ending tag in HTML is case insensitive [Sprint 38]

After the update to the Sprint 38 the automatic addition of the ending tag in HTML became case insensitive. What does it mean? If I type for example this:

``` HTML
<HEAD>
```

Brackets automatically adds this:

``` HTML
</head>
```

The previous behavior in Sprint 37 was correct, it automatically added the same case sensitive ending tag, like this in the case above:

``` HTML
</HEAD>
```
