Map: Safe-zones

[assofohdz]

Implement fly-over safe zones (see the map upgrade work item)

From Wikipedia
Safe zones allow a players to evade enemies or simply take a break from the game. While in a safe zone, a ship cannot take damage but also cannot fire. Most safe zones have a time limit; if a player stays in a safe zone too long, he is kicked from the game and must rejoin the zone. This prevents players from camping out in a safe zone and leaving their computer idle for an extended period of time in order to maintain their state in the game.