OO-2515: save the master file untouched, deliver  more pixels for the print view of the members course element, add REST api methods to check if a particular size of portrait is available

OO-1819: add param for inital author, add param to not set the initial author, return more infos for course members

OO-1593: revert the custom identity mapping, too much side effect, it would need a refactoring of the IdentityImpl mapping

OO-1436: fix an issue with a method's signature, log audit creation of identity and authentication, show errors after import of users...

OO-1341; make the extension of the image mandatory, needed by the java scaling service to discover the type of the image

no-jira: fix a unit test which fail randomly because Grizzly change its HtppSession during processing the request

OO-406: implements the skeleton for the OpenMeetings rooms, course building blocks, group tools, connection via SOAP to OpenMeetings...

no-jira: fix documentation of REST API, fix wrong path of the LogWebService, backport RegistrationWebService to OpenOLAT with its unit tests

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