This bean holds user and session object of the current user after he
joins a session and could be used to access those objects within the
application.

Added two simple URIs to get a JSON representation of the referenced
objects.

Jenkins tries to use old version 2.1.1 but this artifact is not
available anymore.

This indicates conflicts in CouchDB that should be handled by
application. Those conflicts might occure, if a single user is logged in
on two different devices at the same time.

Those logging entries are obsolete and only used to grow log files ;-)
Only log log entries if an error occured - not for each event.

These classes could be used to replace methods from DAO class.

question. See commit 990eb9fe.

**/lecturerquestion/{questionId}/answer/ for free text answers.

**/lecturerquestion/{questionId}/answer/.

question object.

property set.

answers of the previous piRound were selected if no answer for the
current piRound had been saved.

saveQuestion, update(Question), getAnswers, saveAnswer, getMyAnswer.

countActiveUsers for reportActiveUserCountForSession as it was already
the case for reportSessionDataToClient.
Added check against null for session key in Socket.IO's disconnect
handler.
Logging adjustments for Socket.IO specific code.