Assign specific hourly profiles for Friday day type

@ctena , I did an analysis of diurnal profiles for Barcelona from TomTom congestion statistics per day-of-the-week.

As you can see in the plot below, the diurnal profiles during Fridays are very different than from the rest of the working days (i.e., Monday to Thursday). A similar thing is observed in other cities (e.g. Madrid, Berlin).

Right now in the EI config file of HERMESv3_GR the user can assign specific diurnal profiles for weekdays, Saturdays and Sundays. How difficult would it be to also be able to assign specific diurnal profiles for Fridays? Would this additional feature imply a lot of recoding? It may be relevant for simulations we are running under CAMS2_40.

FYI: @ojorba