Merge pull request #12 from willyao94/Kevin

Implemented Employee login feature
Deleted old version

Avoid any confusion (this version is way too old)
Added advancedsearch.php, catalogue.php, and itemdisplay.php
Merge branch 'Will'
Implemented room.php; user chooses a branch, date, and room number
Fixed required login bug
Merge branch 'kevin' into will
Added dropdown for logout to access account page