im cuurently wondering if array.unique() wont work with multidimensional arrays. my array:
[ ["task-1", "task-2"], "task-2", "task-112", "task-108", "task-113", "task-109", "task-114", "task-54", "task-55", "task-58", "task-59", "task-107", "task-110", "task-111" ] won't cleaned up. you notice the double-appearance of "task-2".
