Issues/1052 blog sidebar tidyup

Closes #1052 

Before:

![blog_posts____pombola_south_africa-3](https://f.cloud.github.com/assets/187630/1620199/efa0b992-566f-11e3-93c9-3b77c4676322.png)

After:

![blog_posts____pombola_south_africa-4](https://f.cloud.github.com/assets/187630/1621481/fe4337da-568e-11e3-8022-cccf83d6fcc8.png)