templates: introduction to validation text

* Adds introduction to validation text and more updates.
  (closes #214) (PR #247)
templates: text about CMS data in publications

* Adds text about CMS data in publications.  (addresses #249) (PR #247)
CMS: update to event display records

* Adds number of event displays.

* Standardises software version.

* Adds accelerator/experiment. (addresses #254) (PR #254)

Tested-by: Tibor Simko <tibor.simko@cern.ch>
CMS: Commissioning, MinBias, ZeroBias event files

* Adds Commissioning, MinimumBias, ZeroBias event display records.
  (PR #248)