Improved cluster charge cut for tracking

This is an update of #3326. Only changes w.r.t to this is a rebase.
Improvements to the cluster charge for the default tracking sequence:
a) Use thickness of sensors
b) Path-dependent cut in seeding and building
c) pT-cut to switch off CCC for high-pT tracks during building (15 GeV, in iteratio n0 and 3).