Welcome page and DB update

Changelog:
- Major Database update
--Added fields and values to multiple tables, please look

-.java file update
--entity classes rebuilt and remade.  Updated to match the new database

-our icon is now a banana

-controller update
--Assignment and Reminders added sql commands using Deriks changes.
-welcome.xhtml has been updated

Overall: Update your Database and check out the welcome page.  I
recommend signing in as bggreen