Fix javadoc for jetty:run mojo to point to correct documentation.
438895  Add mvn jetty:effective-web-xml goal
439387 Ensure empty servlet-class never generated for quickstart
439390  Ensure jsp scratchdir is created same way for quickstart and non-quickstart
439394 load-on-startup with value 0 not preserved for quickstart
439399 Scan tlds for apache jasper standard taglib with jetty-maven-plugin
testing autopush
Guarded calls to LOG.debug() with if (LOG.isDebugEnabled()) to reduce allocation of varargs Object[].
439540 - setReuseAddress() in ServerConnector.java is not coded properly

+ Adding unit test to confirm existing behavior of
  ServerConnector.setReuseAddress(boolean) and ServerConnector.open()
Merge remote-tracking branch 'origin/master' into jetty-http2
fixed merge