Fixes for oracle import
Merge branch 'master' of http://github.com/constcast/flow-inspector

Conflicts:
	preprocess/import_db_to_redis.py
Merge branch 'master' of http://github.com/constcast/flow-inspector
Merge branch 'master' of http://github.com/constcast/flow-inspector
Merge branch 'master' of http://github.com/constcast/flow-inspector
SQLBase: Fix for host/port calculation

Unidirectional flows have not been considered for
IP or Port aggregation.
Proper exception handling for oracle
Add required types for oracle
Merge branch 'master' of http://github.com/constcast/flow-inspector

Conflicts:
	lib/backend/sqlbasebackend.py
	preprocess/import_db_to_redis.py
Merge branch 'master' of http://github.com/constcast/flow-inspector
Oracle Data Import

Fixes import of flows from oracle databases, by
converting the upper case oracle column names to
case sensitive columnnames that we can parse
(and that we get from all other databases that
we support ...)
Corrected UNION statement for Oracle DB

When performing flow aggregation on the oracle database
with filters applied, the UNION statement did not provide
correct results.