Resolves #288 frame buffer swap bug

applications/gui/src/camera.cpp

applications/gui/src/main.cpp

applications/gui/src/src_window.cpp

applications/reconstruct/src/main.cpp

components/audio/include/ftl/audio/frame.hpp

components/audio/src/source.cpp

components/control/cpp/src/master.cpp

components/rgbd-sources/include/ftl/rgbd/frame.hpp

components/rgbd-sources/src/frame.cpp

components/rgbd-sources/src/frameset.cpp

components/streams/src/receiver.cpp

components/structures/include/ftl/data/frame.hpp