Merge branch 'master' into 'master'

Functions added to GaudiUtils that allow generation of random numbers from integer and string input

Add hash functions with good avalanche characteristiscs to GaudiUtils.

- Header and implementation are QuasiRandom.{h,cpp} in GaudiUtils
- Relevant functions have been added to GaudiPython dictionary for
  interactive use
- Update RandomNumber test to include these functions
- Update RandomNumber test reference

See merge request !20