Robovac/robovac: many bugfixes/tweaks
robovac/RoboVac: Code complete & debugged
Robovac/robovac: Fix vac motor handling

* Fixed statemachines so vac power up/down is at beginning/end
* Added a cooldown state
* Added timers for power on/off times
* Added menu to set/change power on/off times
* Added code to save/restore power on/off times