Fix for Issue #47 : DiscussionBean Class should be renamed to proper
mapping .

Renamed DiscussionBean.java to Discussion.java and also renamed object
names to proper naming.

Signed-off-by: Ashish Namdev <ashish28.sirt@gmail.com>
Fix for Issue #41 : deleteDiscussion() does not have proper information
flow.

implemented RequestDisptacher to redirect user with proper infromation
about the action .
if discusison is deleted it will prompt for success else it will ask to
try aagin later !

Signed-off-by: Ashish Namdev <ashish28.sirt@gmail.com>