GriefPreventionFlags

 - Bug fixes
 - Remove creeper explosion flag
 - Added Flag Clusters. Create your own flags!
 - Bug fixes: If someone with only the gpflags.setflag permission created a claim then logged out (or the server reloaded) they would lose access to set flags in that claim.
 - Updated to cb 1.5.2R1.0
 - A few new flag types, mostly separated exiting ones further.
 - Flags now have default values
 - Code Improvements
 - Localization - Flags and messages
 - Flags are now enumerations
 - Events for other plugins to hook into added
 - Javadocs are added
 - New Public Api
 - Tightened control on methods/classes other pluigns have access to
 - Added task to clean up the database by removing deleted claims every 30 seconds
 - Added warning when a development build is being used
 - Reorganized the code into packages

- none