Round points before calculating the grades and displaying #186

src/CMakeLists.txt

src/data/graph.hpp

src/data/nodes/grade_list.cpp

src/data/nodes/grade_list.hpp

src/data/nodes/rounded_points.cpp

src/data/nodes/rounded_points.hpp

src/data/nodes/student_points.cpp

src/data/nodes/student_points.hpp

src/util/defaults.hpp

src/util/points.cpp

src/util/points.hpp

src/view/main_window/export_rwthonline.cpp

src/view/main_window/main_window.cpp

src/view/statistic_window/calculation_window.cpp

test/view/main_window/point_histogram_test.cpp