Apurv

changed manage_student.js deleted unwanted things
delete_student.php
Apurv

changes made to manage_students.js 
update functionality after submitting
Apurv

changes made to manage_students.js 
update_student_details.php created in models/admin
Apurv

changes made to manage_students.js 
update_student_details.php created in models/admin
done with update student
Merge origin/master

Conflicts:
	views/admin/update_student_details.php