OO-3295,OO-3538: replace Jersey with Apache CXF (JAX-RS 2.1, Spring integration), remove the JAX-WS stack from Sun, update support for OpenMeetings (patch S. Clemenz)

OO-3523: disable the possibility to skip the launch page in LTI course element if the configuration at the LMS level say so

OO-3303: Show number of users in report part for session informations, exception handling and wording

OO-3532, OO-3532: add a third queue especially for deletion and export of users to not disturb the other services, export participant folder's drop box of users

OO-3473	: delete the temporary files only at the end of the wizard and not after the first created element

OO-3472: rewrite the delete routine to delete only the file of the edited checkbox, implement a check to not delete the file if it's used by an other checkbox

OO-3469: better check variable in velocity template, check if the candidate session exists in disposing phase

OO-3296: don't upgrade manager roles if administrator and decouple every role, remove double update roles method...

OO-3296: implement migration tool from institution resource manager to learn resource manager based on organizations

OO-3303: Survey course node with configurations for executor and report viewer roles, surveys are always anonymous