HBASE-12043 REST server should respond with FORBIDDEN(403) code on AccessDeniedException (Aditya Kishore)
HBASE-12044 REST delete operation should not retry disableTable for DoNotRetryIOException (Aditya Kishore)
HBASE-12045 REST proxy users configuration in hbase-site.xml is ignored (Aditya Kishore)

Conflicts:
	hbase-server/src/main/java/org/apache/hadoop/hbase/rest/RESTServlet.java