script-security in server.conf

The openvpn server should have the appropriate permissions to run the
python script.
https://forums.openvpn.net/topic8151.html
Encoding issue on user-auth.py

When running with my openvpn version (OpenVPN 2.2.1 x86_64-linux-gnu), i had the following traceback:

Traceback (most recent call last):
  File "/etc/openvpn/openvpn-sqlite-auth/user-auth.py", line 21, in
<module>
    if hash_func(os.environ['password']).hexdigest() != password:
TypeError: Unicode-objects must be encoded before hashing
Merge pull request #1 from smoothy/master

Adding comment & Encoding Fix