Set cex of xy plot and table of estimated coefficients
Set cex of points in XY plot
Set debug to 0
Get Y values reactive passing from rv and getY() to cv, ie a reactive creation of Y values to a computed values, wich is so dependent of rv
Clean code from commented sections, and delete reset on change of alpha1 and beta1
Clean code for comments in ui.R
Set more detailed label for alpha1
Move barplot input to graphical parameter as it is not a test parameter but just a choice to see barplots or not
Set values of select to adapt to display