OO-293: better back support in course (run), better switch between sites and dynamic tabs, better behavior after closing a tab (stack of previous tabs/sites not limited to 1 site)

OO-369: make an interface for the StackedController, add some translations, refactor the course db main panel

OO-291: fix load for update for PostgreSQL, fix unit test for course group management (always consume entity before queriying the database!), fix the statistics rights in the course view

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-302: implement CSS class to open the course editor in course, in test configuration and in the dialog to choose repository entries

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

FXOLAT-357: implements link abonnement to assessment tool, upgrade the publisher with the right business path

OO-170: refactoring of the property table, move efficiency statements and initial/recent launch dates to their own table

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branch : bps