Channel image link is empty

The RSS spec says that LINK, TITLE and URL elements are required, so let's make sure we have test coverage for this output.

The current test coverage is fine, we just need to fix the bug.

This doesn't work because a regular LINK tag is normally a self-closing tag, so it's not expecting to create a structure like <link>VALUE</link>, it wants to create something along the line of <link content="VALUE" />.

My efforts to work around the restrictions of the HTML structure are proving to be rather frustrating.

Let's see if this works.

That worked. It's a clusterfsck, I feel like I need a shower, but it works.

Committed.

Automatically closed - issue fixed for 2 weeks with no activity.