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

OO-256: move the access controlling from the velocity template fo catalog to the repository manager where it's fully implemented

OO-280: build the infrastructure for Selenium 2, Arquillian and a managed Tomcat 7.0, remove old selenium 1 tests, remove profile of Firefox...

OO-278 fix wrong default value for debug mode and check if source path really exists when setting to prevent followup errors.

OO-279 add missing quota permission check in repository entry details page, move check code to quota manager

OO-262: make the default value consistent for the flag "is assessable" of the SCORM course building block

OO-247: make the IM client robust against executor overflow, the changes prevent red screen just after login

OO-244: prevent a rare timing condition if someone logout and open a new browser while a thumbnail is generated (in the real case, the creation of the thumbnail takes 3 minutes)