Removes bad TODO comment.
Adds user to request.DATA in viewset to work with rest framework.
Invalidates kawrgs values before save in viewset to ensure we will used passed data when patch or put.
Adds method to update item path according changed parent parent and item name.
Adds tool method to get or create parent item for a given path and user.
Removes unuseful TODO comment.
Updates the way we set item parent on pre save.
Adds some comments.
Updates children paths recursively after save.
Updates tests.