Add free functions:

previousDayHoliday():
	Check if previous day was a holiday. Check is done relative to
	computed endtime.

isHoliday():
	Check if startDateTime is on a holiday.

getPaymentOptionIndex():
	Compute the index of the payment-options-section inside a tariff-file.
	This is done as workaround (and backward compatibility).

parseWeekDay():
	Parse new structure of tariff-file.

library/include/mobilisis/configuration.h

@@ -36,6 +36,7 @@
 using namespace std;
 using namespace rapidjson;
 
+
 class Calculator;
 class Configuration
 {
@@ -59,7 +60,7 @@ public:
 	multimap<int, ATBPaymentRate> PaymentRate;
 	SpecialDaysWorktimeType SpecialDaysWorktime;
 	SpecialDaysType SpecialDays;
-	multimap<int, ATBWeekDays> WeekDays;
+    multimap<Qt::DayOfWeek, ATBWeekDay> WeekDays;
 	multimap<int, ATBPeriodYear> YearPeriod;
 	multimap<int, ATBWeekDaysWorktime> WeekDaysWorktime;
 	ATBPaymentOptionType PaymentOption;
@@ -126,3 +127,15 @@ private:
 
 	QVector<ATBPaymentOption> currentPaymentOptions;
 };
+
+bool previousDayHoliday(Configuration const &cfg, QDateTime const &t);
+bool isHoliday(Configuration const &cfg, QDateTime const &t);
+int getPaymentOptionIndex(Configuration const &cfg);
+
+ATBWeekDay parseWeekDay(Configuration &cfg,
+                        rapidjson::GenericMemberIterator<false,
+                                                         rapidjson::UTF8<char>,
+                                                         rapidjson::MemoryPoolAllocator<rapidjson::CrtAllocator>> k,
+                        QString const &innerObjName,
+                        Qt::DayOfWeek weekDay,
+                        QString const &weekDayName);