QRadioGroupBox and QCheckGroupBox with abstraction class

Add QAbstractButtonGroupBox class abstraction for the next class
Add QRadioGroupBox widget class
Add QCheckGroupBox widget class

Integration with deisgner
Add QCheckGroupBoxPlugin class
Add QRadioGroupBoxPlugin class
Hm, there is no real problem having the group not sorted, the only thing that need to be sorted is the layout ?
So when u build the QStringList of items, just iterate layout widgets and make sure they are part of the button group ?