Linkslists fixes

- [fix] Rationale behind vertical spacing of links list items is readable
- [fix] If an item has no 5/3 crop available, don't modify its layout

## Before

![screen shot 2014-02-21 at 16 15 42](https://f.cloud.github.com/assets/85783/2231739/81dbad7a-9b13-11e3-88e9-3126e86be10f.PNG)


## After

![screen shot 2014-02-21 at 16 15 58](https://f.cloud.github.com/assets/85783/2231741/848ebaa8-9b13-11e3-920d-ea6959399d1e.PNG)

![ ](http://1.bp.blogspot.com/-2o8MqV2LX04/UwYhjtE81TI/AAAAAAABGEE/EbXQmi4w7e0/s1600/1.gif)