Added ompl_demo and ompl_gui packages as submodules

extracted packages from subfolders in:
- www.github.com/mas-group/sdp_ws2013_ompl
./project/ompl_gui and ./project/ompl_demo

into there own repositories
- www.github.com/moriarty/libsdp_ompl_gui
- www.github.com/moriarty/libsdp_ompl_demo