Merge pull request #6 from sandeepAshwini/sandeep

Added EventStatus. Made Client thread safe.
Added Subscription. Removed Subscriber.
Server-push implemented.
Merge pull request #7 from sandeepAshwini/aravind

Added Subscription. Removed Subscriber.
Fixed menu. Server removes subscription at the end of the event.
Merge branch 'master' of https://github.com/sandeepAshwini/dos.lab.git
Added Comments.
Merge branch 'master' of https://github.com/sandeepAshwini/dos.lab

Conflicts:
	src/client/Tablet.java
	src/server/Obelix.java
Removed Duplicate.
Package restructuring.