Bug 1027250 - [Rocketbar] Search suggestions in the Homescreen settings ...

...is not consistent with the rest of the UI
from
```html
<label data-l10n-id="vertical-homescreen-icon-layout">Icon Layout</label>
```
to
```html
<p data-l10n-id="vertical-homescreen-icon-layout">Icon Layout</p>
```

will have the same result, please give it a try on your side.