Before hibernate session is closed, it is checked if it is open.

Normally, this shouldn't be necessary but prevents yet another exception in case of previous error.
DA REST server URL changed to public SETCCE Research server
Minor optimization in listing identities. Providing better logging when invalid intent is received.
The Net class from CollaborativeMeetingRandomUsersProject is used to download files. With previous implementation, download from DA REST Tomcat servlet didn't work.
permission to access content provider temporarily disabled