QSettings:
- create .ini file
- create "First run message box"
- create .ini file and some program settings
create new class
test
fixing about()
-deleted window and add button and lineEdit
Save font to ini file
AddWindowFunction
delete comment in code
Merge pull request #44 from ITAAcademy/AndriiN/Settings

AndriiN/settings
Merge branch 'ivan/ab3' into itainformator
-fix bug
Merge branch 'AndrewS/WindowsFunction' into itainformator
delete some code bugs
Fix
Created - Widget you/  List opened windows
create app functional "Default settings"
create 2 functions: loadAppLang and saveAppLang and methods setAppLang ang getAppLang - class pSettings. Functions  - public, methods - public. For use - include settings.h
Merge pull request #51 from ITAAcademy/AndriiN/Settings

Andrii n/settings
Merge branch 'FixForMErge' into ivan/List_opened_windows

Conflicts:
	mainwindow.cpp
	mainwindow.h
	mainwindow.ui