Merge pull request #16 from ramyaps/master

modified sell.php to correct the following error:
Merge pull request #17 from ramyaps/master

Additional functionality : Search products listed by a particular seller
add more test data, add price, add waiting list
Merge branch 'master' of https://github.com/updownlife/campustore
add waiting list and the first one in the list will order it automatically and got a notification message once the order is cancelled
change buer to buyer
last time before demo
Merge pull request #11 from updownlife/master

merging from master dec 05