Improve subtask management
Currently one needs to create a task and drag&drop it to become a subtask.
Drag & Drop is nice but a button could make this feature much more clear (in the sense that this feature exists);
If we have a tasks with subtasks with subtasks (..) drag and drop start to be very inconvenient to put the task in the right place.
I do like drag&drop but it would be great to have another way to create subtasks.
Submitted by: Victor Toso <<bug..@..com>>
Assigned to: firstname.lastname@example.org
Original ticket: #779068