Upgrading Activiti to 5.14

git-svn-id: https://svn.apache.org/repos/asf/syncope/branches/1_1_X@1534526 13f79535-47bb-0310-9956-ffa450edef68
[SYNCOPE-151] Introducing support for live RESTful API documentation based on XSLT transformation of WADL dynamically generated by CXF

git-svn-id: https://svn.apache.org/repos/asf/syncope/trunk@1534986 13f79535-47bb-0310-9956-ffa450edef68