Clans

Changes:
Admins using /opclan claim now ignore the minimum clan home distance when making the initial claim for a clan.

Fixes/Internal Changes:
Fixed major lag spike when claiming a large chunk radius
Performance optimizations for servers with multiple large claimed areas and Dynmap.
Chunk owner lookup optimizations
Fixed clan commands not working for players that aren't in clans
Fixed NullPointerException if borderlands try to regenerate after a clan has disbanded