enhanced login/logout process
-> userid is saved in session
-> logout button added
-> firstly itis checked whether user is logged in
redirect to index.php if user is logged in already
added div area for login username and status at the top
ESC on search textfield -> blur
made authentication more secure with encrypting passwords and maintaining an auth_string
added auth_string column to user; password and auth_string not null; dropped is_admin
changes to styles -> shadow for entries; paddings and margins for entry add link
changed entry_add_link style -> button with background; added border for class entry
made header smaller -> float left title, float right status;
fix width of body -> 1200px
moved inline styles of body to .css file