OO-763: merge the BaseChiefController with the BaseFullWebappController to flatten the div hierarchy and minimze it

OO-984: add media mapper for description, objectives, credits, requirements, refactor long to int conversion in quota, remove some used parameters for the rich text element

OO-1042: check the boundaries of the hibernate bag before add a checkpoint, clean the velocity container and reload all data after a save...

OO-936: implements course element "check list", enhance the flexi-table with sort, filter and export, enhance publish process with an update step, upgrade pdfbox to version 1.84

OO-973: implements a strict check on ownership of the resources in the query, return only courses where the author is in the owner security group

OO-911, OO-912: implements the course node triggered buttons in assessment tool, implement bulk upload for tasks with selection of a group if needed

OO-852: fix an issue with return files and the wizard, wording, german, english and french translations

OO-852: implements the new bulk assessment wizard, move the task executor and scheduler in the services package

OO-798, OO-797, OO-796: update the webdav implementation based on Tomcat, make OpenOLAt work under root context, small refactoring of the dispatchers, push raw files dispatcher to its own servlet, implements Digest authentication...