[PAXWEB-751] - Pax web start jetty connector before context loaded, lead to 404 fault
Merge branch 'master' of https://github.com/GeekTang/org.ops4j.pax.web

Conflicts:
	pax-web-jetty/src/main/java/org/ops4j/pax/web/service/jetty/internal/JettyServerImpl.java
PAXWEB-758 cache the classloader information to improve the effeciency, especially for web service application