- fixed compiler warning in cef_client
- refactoring
- now compiles with gcc flags -Wall and -Werror
Merge branch 'master' of github.com:jarrettchisholm/glr

Conflicts:
	include/glw/shaders/GlrShaderProgram.hpp
	include/glw/shaders/GlslShaderProgram.hpp
	src/glw/Texture2DArray.cpp
- some refactoring
- fixed compilation of fps camera test