Managing a large number of contexts in JMX is difficult

Contexts appear in tools such as jconsole identified by a number starting from 0. If you have more than a couple of contexts, it is difficult to identify a context when it needs to be managed, because you have to view the Attributes of each to find the one you want.

Attached is an implementation of org.mortbay.jetty.servlet.management.ContextMBean, which will use the context path as the id, rather than a sequential number.