OO-534: implements share, detail and a preview of an hard coded QTI 1.2 item, all metadatas and list

OO-347: add CSS class for details of a repository entry and more log by deployment of courses via the REST API

FXOLAT-208,OO-425,OO-548,OO-550: Set more pessimistic timing limits in FunctionalUtil and enhanced XPath selector in FunctionalRepositorySiteUtil and created some skeletons.

no-jira: remove very dummy test, activate my tests for the merge of the entity manager spring <-> openolat

no-jira: fix logging in the course, the logging resource of type "node" made unique in the list of resources

FXOLAT-208: removed unneeded idle() calls, fixed clearing cache method and implemented granting rights of added member to group.

OO-545 adding information about deprecated local data source / c3p0 pool and recommended jndi configuration