Pimpl CommandController

Change-Id: Ieb63cd77f412d392f5819ffc6115ab4dc896bdf1
Pimpl StateMachineToolBar

Change-Id: I2a01ba98c48f7a7d279c1cc5357a9f9b3f9c0332
Pimpl StateMachinePaletteWidget

Change-Id: Ie1fdfa7d13c7735042e8a4e05446e77a6c4981a7