General Update

Updates to use GriefPreventions indev #154 createClaim() method and
included a block to claim posts with WorldGuard. Removed managedWorld
variable from PopulationDensity class and moved it to ConfigData class
Added softdepdnd for WorldGuard
Added softdepend for WorldGuard
Revert "Added softdepdnd for WorldGuard"

This reverts commit c716b766b1fc45286f6448d59464bd73dc079789.
Added WorldGuard to softdepend