Added serialization / deserialization functions for the implementation.
Implemented read() / write() methods for the classes with the school data.
 On branch master
 Changes to be committed:
	new file:   SpiridigliozziLuca19960306
	modified:   bin/Debug/schoolMarkLogger
	new file:   competence.cpp
	modified:   competence.hpp
	new file:   lesson.cpp
	modified:   lesson.hpp
	modified:   main.cpp
	modified:   menu.hpp
	new file:   quartal.cpp
	modified:   quartal.hpp
	new file:   school_year.cpp
	modified:   school_year.hpp
	new file:   serialization.hpp
	modified:   user.cpp
	modified:   user.hpp