[SYNCOPE-539] Edit user with resources causes Ajax failure

git-svn-id: https://svn.apache.org/repos/asf/syncope/branches/1_2_X@1616134 13f79535-47bb-0310-9956-ffa450edef68
[SYNCOPE-539] Merge from 1_2_X

git-svn-id: https://svn.apache.org/repos/asf/syncope/trunk@1616140 13f79535-47bb-0310-9956-ffa450edef68