adding exam schedule
Merge branch 'Dev' of https://github.com/liranbg/JceManager into Dev

Conflicts:
	main/CourseTab/coursestablemanager.cpp
Merge branch 'Dev' of https://github.com/liranbg/JceManager into Dev

Conflicts:
	main/CourseTab/coursestablemanager.cpp
added #27. changed directories (overloaded), added some checkings.
Merge branch 'Dev' of https://github.com/liranbg/JceManager into Dev

Conflicts:
	main/CourseTab/coursestablemanager.cpp