Revert "adding resource path and load an ogrehead; set up the camera"

This reverts commit eab46963f72982d112cbc9a5fc2e39401b039188.
Revert "remove the old OGRE framework"

This reverts commit 749a101336929fc2068f57f34fd52fce4f387709.
add CEGUI support in CMakeLists.txt