Improve filters on timeline

Add size informations on purgelogs form

Simplify editing bookmarks

business rules : add criterion "redactor", "redactor in group", "technician in group"

Possibility to export one ICS file for a group

Possibility to hide "Automatically generated by GLPI X.XX"

Duplicate profile

Mark simply tasks done

Disable new notifications after upgrade

Possibility to sort tickets by fields on "Tickets" tab