use cmakelists.txt from openflipper submodule which includes warnings
for qt 5.7 and 5.8
closes #106 (closed)
please also merge https://www.graphics.rwth-aachen.de:9000/OpenFlipper-Free/OpenFlipper/merge_requests/30
for qt 5.7 and 5.8
closes #106 (closed)
please also merge https://www.graphics.rwth-aachen.de:9000/OpenFlipper-Free/OpenFlipper/merge_requests/30