Formatting in PersistenceWindowPoolTest
Fixes issue which might lead to eternal elections

Member IDs are kept in a hash table which is known to have
 no guarantees for ordering on its keys. This means that we have
 to order explicitly before checking for positions, which we do when
 we check if we are the elector, but we don't when we forward to what
 we think should be the elector. This commit fixes that.
Removes debug output