[PAXWEB-701] Upgrade to xbean-3.18 and do not use the shaded versions
[PAXWEB-690] Make sure pax-url 2.1 is used everywhere and use the uber jars for pax-url-war
[PAXWEB-703] Do not use the wrap url handler (and upgrade to Karaf 3.0.2 because it needs KARAF-448)