adopted display examples to new callbackcontainer
adopted 3D examples to new callbackcontainer
adopted CSSLayout examples to new callbackcontainer
removed kate swap file

ups.
adopted Display_render examples to new callbackcontainer
adopted Display_shader examples to new callbackcontainer
dopted Display_text examples to new callbackcontainer
fixed const correctness in callbackcontainer
adopted Game examples to new callbackcontainer
adopted Game examples to new callbackcontainer