upgrade playdoh-lib

@pmclanahan @Osmose @willkg r?

```
(playdoh)peterbe@mpb:~/dev/DJANGO/playdoh (upgrade-playdoh-lib *%)$ s
[deprecation warnings suppressed]
>>> import django
>>> django.get_version()
'1.5.6'
>>> import django_browserid
>>> django_browserid.__version__
'0.10.1'
>>>
```