Article tags (updated design)

- [new] Shows 5 tags at the end of articles. These usually seem to be ordered by importance.
- ~~[new] Ready to use helper classes for fonts and colours. Can be removed from this PR but they can come very handy when prototyping.~~
- [new] `inline-list` helper
- [improvement] Social icons don't cause a massive repaint when global.scss kicks in (and code is leaner)

![screen shot 2013-10-08 at 17 19 02](https://f.cloud.github.com/assets/85783/1290705/62ec3b58-3035-11e3-9851-3843d1a747e3.PNG)

~~As shown on the screenshot, colour contrast is not WCAG compliant: this is on purpose since this is not a core content that is necessary for understanding the story. If someone has a problem with this we can have a chat :)~~

Thanks @daithiocrualaoich for the help.

![ ](http://2.bp.blogspot.com/-eUn_577MRe4/Ukf5OWkNDNI/AAAAAAAA_3g/yZTfyEWRn0Q/s1600/2.gif)