Small adjustments to the random events

small adjustments to the voidstalker

wasteyards dont have an outpost anymore, reduced reward for some missions, removed reward from scavengers galore mission(as you can sell the items now)

fixed some problems with the missions for new frontiers compatibility

updated missions for new frontiers

fixed sonar labels for hydrathresher swarm mission

minor adjustmensts to the Hydrathresher sprite