[518383] Add basic Java EE 8 support to WTP Java EE Tools 

This patch adds basic Java EE 8 support to the Java EE Tools component.
Allows for Dynamic Web 4.0, EAR 8.0, App Client 8.0, etc, projects to be
created and for their respective deployment descriptor files to be
generated and updated.

Signed-off-by: John Collier <John.J.Collier@ibm.com>