Styled tags to make them smaller, rectangular and slightly opaque. 

I changed the styling of the tags so that they don't draw more attention than the comment itself. They are now rectangular, smaller, and slightly opaque. 
![smallertags](https://f.cloud.github.com/assets/521978/940573/0313d89c-012f-11e3-9eda-6dd04bc1febe.jpg)

On hover they become less opaque, as shown here.
![smallertagsanno](https://f.cloud.github.com/assets/521978/940574/0623099a-012f-11e3-9296-d3093cea1bb8.jpg)

Dan and I think this looks better.