Delete not use files.
Add master class to derived class in constructor.
Fix not correct iterators in cycle.
Add new type bonus in class Bonus. Delete default parameter in methods.
Rename class methods. Change return statement type from refference to
pointer.
Add type to template from return methods in *cpp files.
Add new Bonus to Human class.
Add new headder.
Add template type in return methods.
Correcting code.
Many fixes for compliance.