adding servlet api (from tomcat)
add: Script for retrieving a recent version of Jetty
Importing upstream Jetty jetty-9.2.1.v20140609

Imported packages:
* http
* io
* security
* server
* servlet
* util

Removed for compilance:
* Packages:
  - org.eclipse.jetty.server.session.jmx
  - org.eclipse.jetty.server.handler.jmx
  - org.eclipse.jetty.server.jmx
  - org.eclipse.jetty.servlet.jmx

* Classes:
  - org.eclipse.jetty.util.log.JettyAwareLogger
  - org.eclipse.jetty.util.log.Slf4jLog
  - org.eclipse.jetty.server.Slf4jRequestLog
Add an example jetty launcher with client certs

and an example for outputting information about client certs.
Update key Generation Script to use stronger keys and no intermediate files
Hide X-Powered-By and Server header
add a dummy login mechanism
Fix logout from unpw login.
ADD: Basic page abstraction
ADD: Further externalisation; better redirect around the login
Pages in a own package
Added title attribute + moved page to pages pacckage, too
ADD: Added serial version id to avoid the warning.