Simulation mode can deactivate components

[Jiri Srba]

Open the attached net, enter the simulation mode and click on the components from the top to bottom. It will deactive
all (or some of them). It says either that at least one has to stay active or after returning to editing mode some of the components
get deactivated. This happens also for other nets with components.

[Morten Jacobsen (mortenja)]

I cannot reproduce it on windows.

[Jiri Srba (srba)]

I found an exact way to reproduce the error:

1. Open the IntroExample
2. Go to simulator
3. Mouse over the IntroExample component (now the text says: Uncheck to deactive the compoment - this is also wrong and
   should be removed from the simulator mode).
4. Now click at IntroExample and place the mouse just above the "I" in IntroExample. This will deactive the component
    in the simulator mode and issues a warning.

[Jiri Srba (srba)]

Well, the mouse over message is now off, but one can still deactive the component in simulation mode by clicking between
I and n in the text "IntroExample". So I open the bug again.

[Kenneth Yrke Jørgensen (yrke)]

I fixed it for pressing space. I also just pushed a version fixing the mouse.