Correctly center the world border (for next season)

This should be left AS IS for this season (factions build against the border for defensive purposes, this shouldn't be changed mid season), but is something to consider for next season Currently, the world border is chunk-aligned on 2 sides, and 1 block further in on 2 sides. This means that for factions that build bases along the border, they may have a 1 block advantage/disadvantage depending on which side of the border they claim on From testing in singleplayer, this is most likely due to the world border "center" not being set correctly. If the border is being set with vanilla commands, you MAY have to run the command "/worldborder center 0.00 0.00" before setting border size (it may default to 0.50 rather than 0.00)