Don’t show the “All Blah Appearances” links if there are none.

Closes #992 

Rather than hide the whole section just hide the "All .... Appearances" link:

![agnes_noluthando_daphne_qikani____pombola_south_africa](https://f.cloud.github.com/assets/187630/1613958/2e045eac-55e2-11e3-9ca0-61c918361749.png)