Browse stuff

- redirect /browse/userstar/{{user}} to /~{{user}}#starred
- redirect /browse/author/{{user}} to /~{{user}}#packages
- redirect /browse/userstar to /
- redirect /browse/all to /
- link to browse pages from home page. Fixes #245
- link package page depended heading to /browse/depended/{{name}}
trailing slash results in 
![screen shot 2014-11-13 at 3 12 18 pm](https://cloud.githubusercontent.com/assets/954269/5038634/baf745ba-6b47-11e4-99fe-a0d9a615e2ce.png)