Added javadoc
Merge branch 'master' of https://github.com/anagnoad/sudokuDesktopApp

Conflicts:
	sudokuDesktopApp/resources/personDB_file
	sudokuDesktopApp/src/sudokudesktopapp/ApplicationInstance.java
	sudokuDesktopApp/src/sudokudesktopapp/LogInPanel.java
	sudokuDesktopApp/src/sudokudesktopapp/MainMenuBar.java