Attempting to fix comment preview bug

Just so everyone’s aware, I just made a small change to the comment preview plugin to wrap the comment preview in the correct CSS div class. As I made this edit within the plugin itself, it’s not going to be future proof — if we update that plugin, my change will be reverted.

The correct solution is to edit our stylesheet to honor both div classes, or change the class we use for our comments, but either of those might have ripple effects, and I was in a rush this morning so I did the least intrusive change to potentially fix the problem. Worst that can happen here is the preview is still broken.

Can you folks kindly test and let me know if it’s better now? If so, I’ll see about making a more permanent change ASAP.