Parsing "Monday" - "Sunday" section i a tariff-file.
Each day has a memebr named "week_day_default".
It contains the valid default tariff settings for a usual day (i.e. no
holiday etc.)
It also contains the carry-over-settings for the usual day.
In case there is some holiday on this day (for instance on "Monday"),
the the date of the holiday replaces the name "week_day_default".
Otherwise the structure is the same as for a usual day.
Gerhard Hoffmann
58d8f16681