revisit structure of gloperate library
move extended plugin and viewer to cgwhite, fix all remaining libraries and examples, rename-basic painters to globjects-painters
reduce/unify cmake comments
minor adjustments
change headers to api_includes
Merge branch 'renew-project-structure' of github.com:hpicgs/gloperate into renew-project-structure
Restrict example plugins for pure plugin usage
Merge branch 'renew-project-structure' into navigation

Conflicts:
	source/examples/globjects-painters/cubescape/CubeScape.cpp
	source/examples/globjects-painters/cubescape/CubeScape.h
	source/gloperate-qt/include/gloperate-qt/QtOpenGLWindow.h
	source/gloperate-qt/source/QtOpenGLWindow.cpp
	source/gloperate/CMakeLists.txt