Fixed a bug where op's were able to break the generator signs while in game
If the calculated upgrade value contains a .5 it will not be rounded
Added generator stack limit option which limits the amount of stacked items above the generator is no one is picking them up, This option is disabled by default because it is a little resource intensive
Added 3 new permissions, eggwars.vote.time, eggwars.vote.items, eggwars.vote.health