added debug logging for startup time

Signed-off-by: Kai Kreuzer <kai@openhab.org> (github: @kaikreuzer)
Added org.openhab.io.jetty bundle in order to provide a custom jetty
config
Added two rewrite handlers to jetty.xml in order to set the proxy scheme
(for rest url generation)

Signed-off-by: Oliver Libutzki <oliver@libutzki.de>
Added Jetty rewrite module to feature.xml

Signed-off-by: Oliver Libutzki <oliver@libutzki.de>
Merge pull request #10 from OLibutzki/CustomJettyConfig

Custom jetty config
Merge branch 'master' of https://github.com/openhab/openhab2 into fems