openolat#72: restapi: new endpoint PUT /groups/{groupkey}/configuration/tools/calendar enables calendar tool for group

Data model
REST interface
GUI element to watch a live stream
GUI element to see the upcoming live streams
GUI element to edit live stream events

Move the functions of OlatRootFile and OlatRootFolder to the Local
implementations to simplify the use of VFS, implements factory methods
in VFSManager, reduce the number of call to meta informations in folder
listing

make change in upgrader (12.x admin become administrator, sysadmin adn
roles manager, 12.x user manager become user managers and roles
managers)

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-3297: refactor the user management to use organization for managing the roles instead of named security groups

OO-952: move the "display members" configuration to the business group table, optimize the query for the roster (list of contacts)

OO-922 refactored default tools in collab tools to be thread save, disable wiki run when sec setting, chelp and i18n for security module

OO-623: add fields for managed groups and repository entries, add a lifecycle DB object, enhance the REST API to search with externalId/externalRef...

OO-377: map the reservations to the right roles, upgrade waiting list after a cancellation, better choice of templates, fix remove of reservations as coach/admin

OO-377: implements pending state or reservation for groups and repository entry access to participants

OO-302: add RESt API methods to manage the members of a repository entry, fix an issue with the calendar API, fix an unreliable unit test in UserTest by Oracle, add calendar API tests to the OpenOLAT suite

OO-291: optimize synching with instant messaging in the case of batch update, fix rights for the lin links statistics and course db in course...

OO-330: auto rank user from the waiting list to participants if the group allow this and someone increase the max number of participants or change other the settings of the group

OO-291:  enhance the main search function for groups, add search in waiting list, add search of public group, add unit tests

OO-291:  add documentation, add more unit tests for RightManager, merge tests of BusinessGroupService...

OO-291: first step: move business gourp manager to a business group service, remove dependency to the context...