fixed problem with accordion headers appearing again after minor html ch...

Noticed that the headings in the accordions on the item page had reappeared. Looks like CDM modified the HTML structure a bit which broke the CSS rule to hide this. So, I made the rule more generic.

![employees at women s wear counter brown s department store des plaines history](https://cloud.githubusercontent.com/assets/489933/2533782/a6eb255e-b568-11e3-9e06-27d3a5e5707e.png)