Bubble Chamber and Components

All previous files have been combined into one, all dimension and alignment issues have been fixed. This file has been run in geant4 and works, see wiki for output. Materials need to be defined with correct values (using random values currently).
Delete BubbleChamberComponents.gdml
Delete BubbleChamberMother.gdml
Delete BubbleChamberShell.gdml
Delete CuPortVolume.gdml
Merge pull request #4 from dgetts/BubbleEx-gdml-file-additions

Bubble ex gdml file additions