beta version of installer #SYNCOPE-143

git-svn-id: https://svn.apache.org/repos/asf/syncope/trunk@1607092 13f79535-47bb-0310-9956-ffa450edef68
Avoid a NPE

git-svn-id: https://svn.apache.org/repos/asf/syncope/trunk@1607097 13f79535-47bb-0310-9956-ffa450edef68
License #SYNCOPE-143

git-svn-id: https://svn.apache.org/repos/asf/syncope/trunk@1607098 13f79535-47bb-0310-9956-ffa450edef68