New global tag styles

New global tag styles across galleries and article pages ![image](https://cloud.githubusercontent.com/assets/2236852/4251857/9d4976d8-3a90-11e4-84fe-8dcc66d00f5b.png)

I have a suggestion. With BEM syntax '--' means modification. I am always trying to be careful when I am seeing to many modicators in one class.

Is `--tags` really a modification of `--aside`? Or can we look at it in this case just as another version of `social-wrapper`. If you will change  `.social-wrapper--aside--tags` to a modificator of social wrapper on its own, for example: `.social-wrapper--tags` or `--aside-tags` whatever, then you don't need to override `margin-bottom`, possibly `display: block` and in html you will use just `social-wrapper social-wrapper--tags` instead of `social-wrapper social-wrapper--aside social-wrapper--aside--tags`.

This will, I believe, save some data. It's not much but it can be a lot in the big picture.

Stop by if you want me to explain it in person.