Minor updates for public repo

exercises/02450Toolbox_Matlab/Scripts/default.txt

exercises/02450Toolbox_Python/Scripts/check_installation.py

exercises/02450Toolbox_Python/Scripts/ex10_1_3.py

exercises/02450Toolbox_Python/Scripts/ex10_1_5.py

exercises/02450Toolbox_Python/Scripts/ex3_3_1.py

exercises/02450Toolbox_Python/Scripts/ex6_2_1.py

exercises/02450Toolbox_Python/Scripts/ex6_3_1.py

exercises/02450Toolbox_Python/Scripts/ex7_3_1.py

exercises/02450Toolbox_Python/Scripts/ex9_1_1.py

exercises/02450Toolbox_Python/Scripts/ex9_1_2.py

exercises/02450Toolbox_Python/Scripts/ex9_1_3.py

exercises/02450Toolbox_Python/Scripts/ex9_2_1.py

exercises/02450Toolbox_Python/Scripts/ex9_2_2.py

exercises/02450Toolbox_R/02450Toolbox_R_Development.Rproj