ndlib/curate — pull request #67 by jeremyf (2014-10-29 15:31:57+00:00)
Title: Marking span in link_to's text as html_safe

Prior to this change the following was rendered as the inner html of
the generated a tag:

```
<span class="canonical-image"></span>
```

With this change the generated text is:

```

```

Addresses DLTP-267
Related to DLTP-227