Template LST FEAT: token applies strangly on PCG load

This relates to PCG load of Jango, who reports:
17:39:27.267 SEVERE main PlayerCharacter:8673 Adding duplicate ability: Test63a
17:39:27.268 SEVERE main PlayerCharacter:8673 Adding duplicate ability: Test63b
17:39:27.269 SEVERE main PlayerCharacter:8673 Adding duplicate ability: Test63c

This is actually a problem in that the FEAT is restored both from the TEMPLATE line in the PCG as well as from the Ability line.

On the plus side, a related bug (addAbilityNeedCheck doesn't properly deal with stacked items) actually makes this double-bug work correctly in 6.2.0 and 6.2.1

Fixing the addAbility check issue however, will expose this double-apply-on-load problem.