Chatting issues fixed

Chatting box made
Merge branch 'Build3' of https://github.com/pranjalnatu/Schedula into Build3

Conflicts:

Schedula-build4/war/WEB-INF/appengine-generated/datastore-indexes-auto.x
ml
	Schedula-build4/war/WEB-INF/appengine-generated/local_db.bin

Schedula-build4/war/WEB-INF/classes/schedula/AdditionalInfo_servlet.clas
s
	Schedula-build4/war/WEB-INF/classes/schedula/ClassObj.class
	Schedula-build4/war/WEB-INF/classes/schedula/DisplayClass_servlet.class