Show all subtask sections by default



If a task contains many subtasks, only the first 20 are shown with a “Load more subtasks” at the bottom. While this works fine for a flat list, it seems inappropriate if the subtasks are structured by sections.

I think it would be much more useful if all subtask sections would be shown by default, each one with its own “Load more subtasks” link (maybe the number of tasks per sections should be reduced in that case).