Remove images in comment & debate container

/cc @Vilderness 

Saves ~45 KB on the page, well done Kat!

![screen shot 2014-02-21 at 17 34 03](https://f.cloud.github.com/assets/85783/2232607/76d874b6-9b1e-11e3-8636-cc67392e5c53.PNG)

![ ](http://2.bp.blogspot.com/-zcc75AJJEmo/UrrDiiLeObI/AAAAAAABEg4/1we2Mfph30M/s1600/WORLDS-FIRST-FLAIR-FLAT-TO-WOOD.gif)