Added image support to the quizzes

Minor UI improvements in exam.jsp, bug fix in home.jsp

SecurityMechanism Added and background image changed

Login, Register, UserPanel and Quiz Page improvements,

UserPanel added, UI Improvements, Documentation, Indentation, Works Well

The Quiz Files have been uploaded to a server,

Modifications to UI, displays the test result.

Able to register, login, take the test and save the result to the

Creation of CodeQuiz