Add actions to contacts/index.html page

This pull request improve aspects management as proposed in https://github.com/diaspora/diaspora/issues/3838. It is one step further in the unification of the contacts/index.html page when a aspect is selected, and the aspects/edit.html facebox.

This pull request adds the actions available in the facebox to the contacts page (except rename action, I'm not sure how to present this one).

**Before:**
![before](https://f.cloud.github.com/assets/930064/1462321/852805f0-44f1-11e3-873c-ca249f1ba362.jpg)

**After:**
![after](https://f.cloud.github.com/assets/930064/1462320/84295686-44f1-11e3-8976-8440220383d7.jpg)

This pull request also improve https://github.com/diaspora/diaspora/issues/3796 by creating a new aspects.css.scss file which contains some style from application.css.sass