o Update treatment of AliTrackPoint creation from AliTPCclusterMI

o Update treatment of AliTrackPoint creation from AliTPCclusterMI
o Store AliTPCSpaceCharge3D directly in a file to not initialise
  the maps over and over again which is time consuming
o Update treatment of cluster and distorted cluster treatment
  by creating many space spoint and interpolating to the center
  of the pad row for l x-y and l x-z
o Proper settings for the pad coordinates of the clusters
o Update macro for doing the reconstruction