OO-1182: pass the toolbar as constructor to initialize all sub controller with it, independent of the timing of this initialization

OO-990: only retrieve the roles once, use them for all access security control, retrieve the groups only if the roles coach, participant or waiting are there... to minimize the number of queries

OO-1000: fix an issue with the edition of coach role of course, fix some issues with the views of the coaching tool

OO-990: mostly fix of the authoring GUI, and unit tests, integrate the demo course to the test resource

OO-990: rework importation of course node with references, implement autowiring capabilities in controllers

OO-985: implements the view to retrieve the course and associated data of a user, filter and order by, clean up the code

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

CL-232: in RESTAPI updated node are not set as dirty, course without changes are published and are in a rare status, access are resetted by publish

OO-622,CL-225: remove username from GUI in place where is not really needed and students can see it. Mark others place with //TODO username where it need more works and/or the username is only visible by author/coach/admin... Additional fix the setup sql for MySQL (index too long).

no-jira: in repository details, open the editor of course the same way it will opened from the course (with breadcrumbs)

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

OO-530: replace HashMap with ConcurrentHashMap in some critical places where multi threading is an issue