Merge branch 'master' of https://github.com/Eyescale/Equalizer

Conflicts:
	tests/client/imageIO.cpp
	tests/server/loader/examples.cpp
Implement downsampling of images to 8bbp during save-to-rgb for #201
Merge branch 'master' of https://github.com/Eyescale/CMake
Adapt and CR for Eyescale/Lunchbox#18 changes
Fix #202: Server::_cmdCreateConfig does not check for mapping errors
Merge branch 'plugins' of https://github.com/Eyescale/Equalizer into plugins
Merge branch 'master' into plugins