fixed the offeritem
Merge branch 'master' of https://github.com/mcho421/OnlineAuction.git

Conflicts:
	OnlineAuction/WebContent/OfferItem.jsp
	OnlineAuction/src/controller/Controller.java
cant input nonnumeric value in specific places now
Merge branch 'master' of https://github.com/mcho421/OnlineAuction.git

Conflicts:
	OnlineAuction/src/group/Upload.java
validate the input