use debug again

Merge pull request #15 from GEANT/dv_log_as_debug

use debug again

Also store IP address and user agent

Merge pull request #12 from GEANT/dv_log_ipaddr_useragent

Log remote IP addr and HTTP user agent

Logs as STATS instead of DEBUG

Merge pull request #11 from GEANT/dv_log_as_stats

Log as stats level instead of debug level

Log more items

Also log the IdP entityID and the account_id

Release first version

Add support for eduPersonUniqueID.

This is dependent on the attribute being available in the database
with this specific ID (259), and also the attributemaps from
SimpleSAMLphp.