[SYNCOPE-487] make Velocity tools available in templates for notifications

git-svn-id: https://svn.apache.org/repos/asf/syncope/branches/1_1_X@1581766 13f79535-47bb-0310-9956-ffa450edef68
[SYNCOPE-487] White noise: formatting

git-svn-id: https://svn.apache.org/repos/asf/syncope/branches/1_1_X@1581781 13f79535-47bb-0310-9956-ffa450edef68
[SYNCOPE-487] Merge from 1_1_X (with modification: one assertion disabled on NotificationTest)

git-svn-id: https://svn.apache.org/repos/asf/syncope/trunk@1581976 13f79535-47bb-0310-9956-ffa450edef68