some fixes

{x = 32013, y = 31562, z = 4} aid 100 to mailbox fix postman mission
crowbar
{x = 32253, y = 32349, z = 6} add forgotten roof witchhouse
{x = 32301, y = 31671, z = 8} fix underground. nordic stronghold
{x = 33260, y = 32365, z = 7} add missing cave
{x = 33205, y = 32527, z = 8} add spawns
{x = 32636, y = 32307, z = 8} add missing cave