Multicontroller do not accept some of the plotting parameters that normal controllers support

It is not possible to change the axes labels through the option `ylab`.
For example, try this code:
```
mumot.MuMoTmultiController([model.SSA(silent=True), model.integrate(silent=True)],
                           shareAxes=True,
                           choose_yrange=[0,1], 
                           ylab="This is the y label" )
```
This is possibly related to issue #353