Added Express Cart, Added Ability to Logout

Added: 
+ Express Cart
+ Logout feature
Merge remote-tracking branch 'origin/master' into justin-11-19-14-8-01

Conflicts:
	WebContent/Express.jspx
	src/ctrl/FrontServlet.java
Merge remote-tracking branch 'origin/master' into justin-11-19-14-8-01
Merged with Master
Minor fixes - code syntax

Changed:
+ company_price to companyPrice
Major Commit! Added Logout, Express Cart, Item View, Custom Front Page
tag

Added:
+ Custom Front Page Tag allowing front page designers to simply use a
tag and insert itemNum as an attr which generates the item box
+ LogoutServlet allowing users to logout
+ Express Cart allowing users to enter a known item number
+ Item View allowing users to view details of a specific product
Remove package statement in B2B.java

Adding package statement doesn't allow the class to be found when
issuing cmd "java B2B ... ..." mainly because of a classpath issue. Not
sure how to resolve. However, B2B verified to work.
Merged w/ Justin - Added Item View, Express Cart, Logout