complete rewrite of the 'AddTrack' button : fix getUpdateBacklogJsonData (not working)
complete rewrite of the 'AddTrack' button : GET/POST (not working)
Timetracking: smarty variable userid (managedUser) now always set
complete rewrite of the 'AddTrack' button : code cleanup & small fixes (not working)

NOTE: smarty $ajaxPage is not set after an ajax call, so next call fails !
Timetracking: do not change backlog on track deletion
display date in updateBacklogDialogbox
complete rewrite of the 'AddTrack' button : fix === type check (not working)
SECURITY FIX: User removed from a team still has access to pages if defaultTeam defined in DB
complete rewrite of the 'AddTrack' button : fix === type check (not working)
cosmetic