135140 cpopa: Merged WEBAPP-API (5.2.1) to 5.1.N (5.1.3)
135064 cpopa: MNT-17341 : External users with Manager role cannot invite other external users to the site because site invitation accept fails
- added test ActivitiInvitationServiceImplTests to its own suite
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/DEV/5.2.N/root@135150 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261