Init repository
Added class Subject
Added equals() to Subject
Created class Professor. Added "public" to classes Subject and Schedule
Added method to sign subjects by professor
Keyboard created. Modified Application class to show Keyboard in screen to test layout
Added listeners to buttons. Method to perform needs to be implemented
Created packages for professor related classes. Created class Display to represent input in keyboard
Make Display singleton
Created Display view with style
Renamed DisplayController to DisplayPresenter
Refresh display on key pressed
Unit test for class related to Observer pattern
Added isSigned attribute to class Subject
Test mock SubjectsLoader
Test load today subjects from database passed
Refactor DatabaseSubjectsLoader to DataMapper pattern
Show subject in application frame to test style
Style Subject.fxml with subject.css
Merge origin/master