sign out links for admin and alumni
logo in login page links to landing page
show flash data in admin page
edited student number validation in javascript
start add update in backend
Merge branch 'master' of f:/repositories/alumni-tracker
new db
add backend to notif and alert in alumni-home
Merge branch 'master' of f:/repositories/alumni-tracker
proper notification markup for admin and alumni
add backend to notice notification in login
fixed student number update bug