Renaming variables, getters and setters mainly in GNGAlgorithm
Renaming variables, getters and setters mainly in GNGAlgorithm 2
Renaming variables, getters and setters mainly in GNGAlgorithm
Merge branch 'dev' of https://github.com/Nominalista/Growing-Neural-Gas into dev

Conflicts:
	inst/include/gng/GNGGraph.h
	src/gng/GNGAlgorithm.cpp
	tests/cpp/gng/basic_integration_tests.cpp
Simple renaming
Merge pull request #50 from Nominalista/dev

Thanks!