Changed insert to observation_fact table.

To meet the constraint defined on table observation_fact. Added values for "encounter_num", "start_date" and "instance_num".
Changed result type i2b2_load_clinical_data.

Result type changed to BigNumber.
Include patch of i2b2 load clinical data stored procedure
Merge branch 'master' of https://github.com/cdejonge/tranSMART-ETL
Make default properties file more generic