Set up space for notes.
Added board validation.
Fixed thread on close.
Unfinished: Working on Scoreboard List
Merge branch 'GUI' of https://github.com/Versaiteis/Sudoku into GUI

Conflicts:
	sudoku-qt/Controller/MainController.cpp
	sudoku-qt/Controller/MainController.h
	sudoku-qt/View/mainwindow.cpp
	sudoku-qt/View/mainwindow.h
Merge fixes
Cleanup and comments