Merge branch 'feature/gui2' of gitlab.utu.fi:nicolas.pope/ftl into feature/gui2

.gitlab-ci.yml

CMakeLists.txt

applications/gui2/CMakeLists.txt

applications/gui2/src/modules/thumbnails.cpp

applications/gui2/src/modules/thumbnails.hpp

applications/gui2/src/views/thumbnails.cpp

applications/gui2/src/views/thumbnails.hpp

applications/tools/middlebury_gen/CMakeLists.txt

applications/vision/CMakeLists.txt

components/codecs/CMakeLists.txt

components/codecs/test/CMakeLists.txt

components/common/cpp/CMakeLists.txt

components/common/cpp/src/timer.cpp

components/net/cpp/CMakeLists.txt

components/operators/CMakeLists.txt

components/renderers/cpp/CMakeLists.txt

components/rgbd-sources/CMakeLists.txt

components/streams/CMakeLists.txt

components/streams/include/ftl/streams/receiver.hpp

components/streams/src/feed.cpp