Add directory testhypmu
Move n of displayed sampled to graphical stuffs
Delete distinction of True Hyp between H1 and H0
Label of dirtest
z -> cv
Reorder inputs
Plot probabilities in H0 et H1 for empiric model bilat
Plot probabilities in H0 et H1 for empiric and normal var known, for the 2 unilateral and the bilateral tests
Set correct colors to intervals in H1 for unknown var
Add limits of confidence for the 3 types of tests