project-listのarchiveされたリストのデザインを調整 closed #290

before
![7b5644fe-5686-11e4-9915-7b51c440cae0](https://cloud.githubusercontent.com/assets/1044064/4753510/abd20a52-5ab7-11e4-8960-54d9e379a62c.png)


after
![ea48c09ed383091dadb39b4254601c88](https://cloud.githubusercontent.com/assets/1044064/4753504/9c0e06fc-5ab7-11e4-9198-1101d76fddcf.png)