Initial request:

If it's not to much to ask - since I have on all three of my input
devices (mouse, gamepad and keyboard) back buttons which unfortunatelly
could very easily be clicked by accident if one has the hands of a
child, my children get kicked out of the current game or the whole
application if they unwantedly get with their fingers/hands on one of
these buttons (the mouse was not made for so tiny hands ...). Could you
please implement and option to turn off the way GCompris behaves after
a "back-button" click-event has fired? (Or at least a dialog box to
check if the "back-click" was by accident or free will). This would help
very much (and save some tears after an unwanted app closing (for
example after trying to do a painting or so).

@jjazeix Would you mind if I looked into this?

Need review --> https://github.com/gcompris/GCompris-qt/pull/208