Merge pull request #24 from burhan3759/master

New feature from burhan: login error message fixed; staff on duty at home page.
Tidy up the index.jsp code.
Merge pull request #25 from menghong777/master

Tidy up the index.jsp code.
Merge branch 'master' of git://github.com/burhan3759/Clinic-Receptionist-System into burhan3759-master

Conflicts:
	web/index.jsp
Merge pull request #28 from burhan3759/master

Staff on duty completed but the appointment have some problem..