Purpose
=======
Currently, it is only possible to have 1 level of sub-tasks per task.
The user may want several levels of granurality.
Specifications
==============
Allow having multi levels of sub-tasks
- Move the parent_id field out of the debug mode and display it above the
Deadline field
- Remove the 'parent task' stat button
- Add the parent_id field to the project.task optional list view
- Display the sub-tasks stat button on sub-tasks
- The 'sub-tasks' stat button should only count/display tasks from the
first level of sub-tasks
- The name of the sub-task should be
parent task: sub task level 1: sub task level 2: sub task level 3...
- The sub-task should be created in the sub-task project set on the
parent task's project
- The subtask_planned_hours and the subtask_effective_hours fields should
take into account the planned hours of all sub-level tasks
TaskID: 2107078
Yannick Tivisse
f34f6ee3b6