PP costs not always shown on level up

[darkclaw3050]

PP costs are very helpful to know when choosing which skills to level; currently, sometimes they are shown and sometimes they are not. For example. Blizzard going from 1-2 shows its PP costs in the tooltip but Stone Arrow going from 1-2 does not. Even if PP costs do not change with a level (and currently they always seem to) it would still help to have it there for reference and to confirm whether the cost would indeed change or not.