OO-2836: update to selenium 3.4, migrate the tests to pass with chrome, add css class mostly in wizards, remove some fieldset in fieldset, add some label around checkbox

OO-2430: update paypal libraries, fix configuration trailing tab, fix return from paypal, fix transaction sort by date and status in administration, fix missing icon...

OO-2201: allow author to batch configure the groups in their owned courses (and user with group management right in the course)

OO-1593: implements several strategies for the state "failed", implements done in assessment tool, checklist and group task...

OO-1980: better check model boundaries and deselect the table multi selection if the search arguments have changed

OO-1616: replace the view for the business group lists with several customized queries which load only the needed data

OO-1616: reduce the number of double call to the repository entry with the manager and after with the course

no-jira: make the group task coure element for owner only, fix RS if there isn't any "next step", french wording, remove visit entirely, add member icon (Font Awesome 4.3)...

OO-1562,OO-1563: add a member management right to the list of course rights and restricts the access to the function of the course members management in function of the administration/group/member rights

OO-1536: inline the user's visiting card in the different member list, add a tool in the list as in author list, add close button for the visinting card (if opened in the main window), add close button to the business groups tabs

OO-1537: authors can see and edit the business groups in their groups from the user management tool of the course

OO-1424: remove subscriptions if a member is removed from a group or a course, or a group is removed from the relations to a course

OO-1292: implements the "Admit" button in course members manager, and disable or enable waiting checkbox in wizard / eidtion of permission in correlation with the other permissions