Fixed Reservation Board entry overlapping issue(1354)
	- Added logic for reservation slot existence detection
Merge branch 'develop' of https://github.com/ronald-gemao07/MeRoRS into ronald
Organized code

- Moved calendar function to show_controller.js
Removed Reservation Details (1455)
	- removed ReservationDetails.js under Schema folder (1083)
	- excluded ReservationDetails schema from the  reservation controller (1083)