Release Candidate 1 for Gringotts v2.3-RC1

I expect to release this version if no significant trouble pops up. Please let me know if anything doesn't work!

v2.3-RC1

supports player UUIDs
old Derby databases will be automatically migrated to the Bukkit-internal database
player names in the database will be automatically migrated to UUIDs
built against Bukkit 1.7.9, Vault 1.4, Java 7.
This version of Gringotts will no longer work with older versions of Bukkit, Vault and Java.
vaults can now be created from most containers (chest, trapped chest, hopper, dropper, dispenser, furnace)
fix a bug preventing creation of vaults when the db still contained vaults in deleted worlds
fix a bug allowing to create multiple vaults on a single container

fix vault creation breaking under some circumstances involving Towny
added support for built-in Bukkit database support. This means that the Derby library is no longer required. If the Derby jar is present, Gringotts will continue to use it, otherwise a DB will be created via the Bukkit API. This should also support MySQL if you configure it in bukkit.yml. Please see the http://wiki.bukkit.org/Bukkit.yml#database for details.

fix bug where Towny vaults would get deactivated on creation of other chests or deposits
update Vault connector to Vault v 1.2.24 -- this version of Gringotts may be incompatible with older versions of Vault

ops/players with permission createvault.forothers can now create vaults for other players and other accounts by creating the vault as usual, but adding the owner's name/id on the thord line of the sign.
fix bug with WorldGuard vault creation permissions

can create a vault now by attaching the [vault] sign to a chest directly (shift+rightclick with a sign), instead of requiring it to be above the chest
added string customization / internationalization for messages to players (contributed by KanaYamamoto/Daenara)
German translation (contributed by KanaYamamoto/Daenara)
accounts can have a purely virtual starting balance (contributed by bezeek)
support for WorldGuard region vaults. Region owners may create a [region vault] with the id of the region on the third line.
/moneyadmin command now supports optional account type parameter. example: /moneyadmin b foo faction. This is primariliy intended for plugins that use worldguard for region management, as there are no player commands to handle these accounts.
for devs: added an event system for vault creation. Gringotts triggers a PlayerVaultCreationEvent when a player attempts to create a vault in the world. Plugins can register an event handler and supply their information for Gringotts to create their own vault types.