SLING-2985 : work-in-progress: should eventually allow to create a new node in the content-browser

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1518246 13f79535-47bb-0310-9956-ffa450edef68
SLING-3032 : adding a 'new' application wizard which creates a set of application-projects based on a maven-archetype. This feature is whitelabel-ready - see SLING-3031

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1518249 13f79535-47bb-0310-9956-ffa450edef68