GUI clipboard actions

Copy, Cut & Paste work with GUI
ConfigDialog disable

ConfigDialog is only shown at startup if ogre.cfg is missing
write GUI to png
new mat init
color test
different copy
Fix GUI bugs

Fixed UV scaling when nonPOW2 is not supported - but otherwise this is
still not working properly (eg. input translation + looks bad)
Limited nonPOW2 get nonPOW2 textures, because we satisfy the 3 rules