add 3 pages for stock manager
resolve
Merge branch 'master' of https://github.com/tinhnghiahoi/projectEJB
Merge branch 'master' of https://github.com/tinhnghiahoi/projectEJB

Conflicts:
	DVDStore/src/java/controller/ControllerServlet.java
Merge branch 'master' of https://github.com/tinhnghiahoi/projectEJB