Doctor and staff login implemented.

Doctor-
	Recognizes doctor
	Link to 1) see all patients for whom he is default doctor, see each patient's details(not yet)
		2) see the patients he has treated ( not implemented yet)
Staff - 
	Recognizes staff member
	Shows what type of staff depending on status. 
	Secretarial sees pages to -add patient -schedule appointment -log patient visit w/wo appointment( not implemented yet)
	Financial sees -patient bill by month and last 5 months -some doctor bill( not implemented yet)

Patient - Can edit own details, See entire treatment billing history, see visit diagnosis and prescription history

Common - logout -search doctor by name - search patient by name