OO-505: manage the cacheable mappers without session informations, try to retrieve them and update them, don't persist one for every user...

OO-467: on second thoughts, the low level check of the max number of versions must detect if the versioning is deactivated and don't add a revision in this case

OO-467: versions of runstructure, editortreemodel, CoruseConfig.xml + low level max number of versions check

OO-502: move the groups / roles cache from the RunMainController to the UserCourseEnvironment to speed-up the condition interpreter on course with a lot of rules

OO-482 show the configured administrative user properties from the MemberList context in members table model

no-jira: between the increment, change name... and the reload, an other thread can change the values in the repository entry, the check with assert was not multithread