Only prevent ice before the match starts
Add SPAWNERS_ONLY region flag: no mob spawns, except from spawners

Thanks @TomShar
Load world configuration earlier to avoid NPE
Wait to teleport player for an additional tick. Closes #160

Addresses https://bukkit.atlassian.net/browse/BUKKIT-1331
Reload map in-place with "/ar reload -x". Closes #158
Allow anyone to use "/ar reload" in practice mode. @Keanulaszlo
Updated version to 2.5 for release.
Updated version to 2.6-SNAPSHOT for development.