TrackBase & HitPattern redesign discussed on the RECO meeting of 08/05/2014

Documentation about the changes:
* https://twiki.cern.ch/twiki/bin/viewauth/CMS/TrackingHitPatternRedesign
* https://indico.cern.ch/event/327055/contribution/6/material/slides/0.pdf

Line7: please remove this ```$...$```. It's cvs. 
I wonder how did it even crawl into this PR