Make PersonStorage::Direction usage consistent
While working with the PersonStorage, more specifically the delPoint methods, they are very inconsistent with the direction parameter.
There is already a enum PersonStorage::Direction
, that wraps the raw integer values, but it is only used for delPointAll
.
This is inconvenient, because it is not used for delPointOf
and delPoint
.
So, refactor the usage of Direction into these other methods.