Don't transform folder name

I read the issue by @nestsman in #475 about UPPERCASING folder names, and actually agree with him that it doesn't look good.
I also respect that it is a design decision, so I though I could make a theme to make it fit my needs. So I made a style-sheet in `owncloud/themes/mytheme/apps/news/feeds.css` and added:

```css
.folder {
        text-transform: inherit; /* Could be 'none' instead */
}
#app-navigation .folder-input {
        text-transform: inherit;
}
```

Much to my surprise the folder names were now lower-cased :question: 

OK, digging a bit further I found that the folder name was transformed in `foldermodel.coffee`.
After some CoffeeScript failures I found that the easiest solution was to add an `ident` property to the `data` object. It Works For Me and there are no failing tests when run locally :)

@Raydiation @cosenal