Add 1px margin to task badges so they don't run into each other/icons

Before:
![screenclip](https://f.cloud.github.com/assets/4501321/1859530/0de25b1c-77a5-11e3-8fa7-8bcad5dcf42f.png)

After:
![screenclip](https://f.cloud.github.com/assets/4501321/1859543/4941780a-77a5-11e3-8bef-5c4b8cf45ea6.png)