Tree style hierarchy for grouping yeasts, recipes, ingredients, etc.

Tree style hierarchy for grouping yeasts, recipes, ingredients, etc. instead of having everything in one large list. It would be nice to create folders to keep the brewtarget built in recipes in their own folder, my recipes in my folder, my brother's recipes in his folder. Also separating the ingredients, white labs in its own folder wyeast in another, base malts vs specialty malts, etc.