Implemented JPetRawSignal, JPetRecoSignal and JPetPhysSignal, refs #598.
Implemented JPetRawSignal, JPetRecoSignal and JPetPhysSignal, refs #598.

JPETTomography/j-pet-framework-examples,wkrzemien/j-pet-framework-examples,JPETTomography/j-pet-framework-examples,JPETTomography/j-pet-framework-examples,wkrzemien/j-pet-framework-examples,wkrzemien/j-pet-framework-examples,JPETTomography/j-pet-framework-examples