install btn, artist tools, review status to theme thumbnails (bug 565179)

**Notes**

- Add button to all themes on hover.
- Decal shows review status if theme artist. Else show default sort decals.
- Edit listing link to artist's themes on hover.
- Theme preview on edit listing page should be left the same.

**Screenshot**

![screenshot](http://i.imgur.com/GYNpNjp.png)

**Chrome Screenshot**

- Disabled install button on hover.

![chromess](http://i.imgur.com/4eGoMzD.png)