Generic UX improvements for the task portal.
Added new sort by, group by and searches options in the tasks portal.
Some options have been renamed as well, while the style has been slightly revised.
The timesheet details of each sub-task from the parent form view has also been removed.
task-2508883
closesodoo/odoo#70305
Related: odoo/upgrade#2580
Signed-off-by: LTU-Odoo <IT-Ideas@users.noreply.github.com>