Fixed first client's access without id (IndexError: tuple index out of range) (thanks to Radko Krkos)

getEvents - id<=0 now resets server's notion of client's id to last N events (and starts sending there)

Some Python/ssl module versions incorrectly initialize hashlib, causing weird openssl errors. Importing hashlib explicitly helps.

More sensible configuration file defaults, some sections left commented to prevent unnecessary default filtering and/or adding Node info

Logging module in Python 2.6 does not accept unicode socket path - but strings from JSON configuration are always unicode. Applied workaround, now on 2.6 Client accepts at least ASCII filenames for syslog socket.

 * Server is now in line with Idea spec concerning client names - they are stored in db and compared lowercase
 * Fixed duplicity check when adding/modifying client
 * Secret is not secret anyway, simplify Client and logging code