Create new home page look for individual publications

The home page for a publication now features two main items:

1. A random (for now) published work from that publication
2. Information about the publication, which is editable by the editor

The "hook" work is truncated to be very short, to try to drive new visitors to browse the issue in which the work was published. This looks like this:

![a poem fading away, with a "Read More" link](http://f.cl.ly/items/3Y1i26433f0Y3d0r3E3r/truncated%20poem.png)

The code could be cleaner, and the look won't work with works that are images or works that start off with a lot of non-viewable characters, but this is the basic idea.