BETA: Reworking ObjectPoly access method, now it's retrieved using getScript().
	* Minor code reuse inside setInstanceId(), UI is now updated through sendInstanceUpdate() method.
	* Reviewed by: UnAfraid

git-svn-id: http://svn.l2jserver.com/branches/unstable/L2J_Server_BETA@6236 d34dfa0f-f91c-0410-86dd-cf06f19dd0ad