Target face overwritten

[DreierF]

For standard rounds with two or more different target faces/diameters etc. the specified target face is overwritten with the first round's target face.

This should be fixed by disabling the "Change Target Face" option when not all target faces are the same for a standard round.

Long term fix should be to add a training editor which allows to define rounds while creating the training and uses the standard round only to prepopulate the template.