Merge branch 'new-upo' into 'develop'

CMakeLists.txt

src/data/nodes/dynexite_exam.cpp

src/data/nodes/dynexite_exam.hpp

src/util/defaults.hpp

src/util/strings.hpp

src/view/boundary_window/boundary_window.cpp

src/view/input_window/load_file_view.cpp

src/view/main_window/export_rwthonline.cpp

src/view/main_window/main_window.cpp

src/view/main_window/min_max_point_screws.cpp

src/view/main_window/students_tab.cpp

src/view/main_window/task_tab.cpp