NAWQAAN-206

* Finally cleaning up some commented code I left around
* Added utility for determining max/min for a log axis
* FlowDuration now determining min and max
* FlowDuration ticks now only powers of 10
I'd suggest var tickLength = 10; on line 184, and then replacing tickLength : 10 on line 210, 226 and then subbing this digit on 233 with tickLength