Concurent import for CDR files
Merge branch 'master' of https://github.com/cgrates/cgrates
Apier.AddTriggeredAction receiving now BalanceWeight and ExpiryTime
CdrExporter with configurable field separator, counters for sms and data usage
Removing Type out of CgrXmlConfiguration
Adding min_callduration option in session manager
Removing unique key in cdrs_extra since it only slows down INSERTs
Merge branch 'master' into stats

Conflicts:
	engine/action_trigger.go