- invite response webscript now uses correct api and put/delete method and only requires invite id and ticket
- improved invite accept/reject pages ui, correct handling in case the invite has already been canceled
- fixed buggy digit-only usernames handling in memberships webscript
- slightly changed comment activities wording
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@10506 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261