add quantity in checkableUnit
realised tree
Merge branch 'tree' into develop
improve tree on main view
realised gui reaction
realised split unit logic
little refactor
realised OptionsDialog
Merge branch 'options' into develop
add Version class
realosed AboutDialog
add aboutDialog call from mainView
Merge branch 'version' into develop
fix buttons in mainView
realised notinv moving
Merge branch 'notinv' into develop