_x, _y, _z, etc are private
remove get prefix in PhGraphicObject and sons
font and image automatic initialization
Joker compatible with paint signal
graphicstrip settings passed to the constructor
video settings passed to the engine constructor
fix graphicStripSyncTest and VideoStripTest
VideoSyncTest inheriting VideoTest
GraphicStripSyncTest inherits GraphicStripTest
simpler resource handling by PhGraphicStrip
remove commant and uncrustify
GraphicStripTest can switch font
doxygen