Fixing entities

1) thanks for verbosity hint
2) asked sat6 devs, most of the names are char[255], meaning, that if using utf, that has wider characters, generated names needs to be much smaller, so changing to 100

Actually, could you fix up the `_call_client_X` function signatures to match what is listed [here](http://docs.python-requests.org/en/latest/api/#main-interface)?