Management: Modify daysOfWeek to dates

[rajan123456]

• Allow setting individual dates with timeslots as a list for its schedule at the module level.
• Modify Attendance service which relies on daysOfWeek check to check if dates exist in Module dates Pushed to Attendance: Modify Module check to verify new dates[] list instead of daysOfWeek #193
• Modify Reporting service to consider dates list instead of determining schedule on its own Pushed to Reporting: Use Module's dates[] field to determine dates for which attendance is expected #194