map additions and fixes

{x = 32091, y = 31189, z = 5} added missing new ice cave in mountain
{x = 32068, y = 31181, z = 3} added missing new ice cave in mountain
{x = 33165, y = 31378, z = 8} added missing stampor cave
{x = 32558, y = 31855, z = 7} add Lost Cavern house in map #303 (not
added in houses.xml yet)
{x = 32982, y = 32717, z = 7} removed the lose Stair bug fix #491
{x = 32538, y = 32669, z = 9} added Smugglers and Bandits fix #490
{x = 32942, y = 31594, z = 8} fixed cutted and destroyed Yielothax cave