Turn ClusterChargeCut on and switch iteration 3(DetachedTriples) and 1(LowPtTriplets)
updates and fixes
add RecoTrackerRunI_cff.py
clone TrackClusterRemoval for cluster chatge cut for seeds
Add customization snippet to put back 2012 default tracking, aka RunI
Merge pull request #1785 from rovere/tracking-cluster-charge-cut-new-iterative

Reco update -- Tracking cluster charge cut and new iterative sequence