broken project's dependencies

added new dependency which is missing from requirements.txt

manage.py runserver throw ImportError:

```
    __import__(name)
  File "./../wsgiadmin/clients/models.py", line 11, in <module>
    from jsonrpc.proxy import ServiceProxy
ImportError: cannot import name ServiceProxy
```

Always add new dependency into requirements.txt, pls. It's a common habit.
