.gitignore & readme fixes
Projekt QtCreatora
MainWindow UI
IdRegisteredClass
ItemEventHandlers
SystemViewItem + SystemScene
MainWindow setup1
AddStaffState
SystemScene handlers & HANDLER macro
SystemImageItem
Temporary image loading
addStaff state added, + handlers initialization fix
Minor fixes

Scene machine fix
AddStaff eventHandler fix
Code fixes
MainWindow::showErrorMessage()
ScoreModel
Standard changed to C++11
VSA
SignalCommunication
GlobalIdType
StaffCoords