Configurable timeout

Make configurable timeout for SlowMode : 
- A new command line parameter "slowModeTimeout" allow to extend the timeout to reach slowMode

You're right Eric, it's just that this line changed very slightly so it popped up and Mark had a question about it...

This default has been set this way for a very long time, and just yesterday we updated our agent code to be in line with it. Until yesterday our agents were capped at 20$CPM by default.