Add autocomplete to history

It was annoying me that I had to manually search a project name when viewing history when I can use autocomplete on the Deploy screen. This adds that autocomplete to History view, too. cc @sihil 

### Before:
![before](https://cloud.githubusercontent.com/assets/394376/4423378/6d71ceec-4594-11e4-8515-652839f52623.gif)

### After:
![after](https://cloud.githubusercontent.com/assets/394376/4423379/71630340-4594-11e4-973d-0589ec0aecc1.gif)