refactoring of start menu
Merge branch 'qml_view' of https://github.com/ZiminGrigory/SeaBattle into qml_view

Conflicts:
	client/src/qmlView/qml/ShipButton.qml
Merge branch 'qml_view' of https://github.com/EvgeniyMsk/SeaBattle into qml_view

Conflicts:
	client/src/qmlView/qml/AiLvlMenu.qml
	client/src/qmlView/qml/BombButton.qml
	client/src/qmlView/qml/StartMenu.qml
	client/src/qmlView/qmlView.pri