Update v2.2

Changes
- [Bug] Resolved issue where the create command wouldn't fail if the name was already in use.
- [Bug] Resolved issue where permission messages would not always be sent.
- [Bug] Resolved issue that caused PlayerDropItemEvent and
  InventoryClickEvent to not play nice with the sticky feature.
- [Feature] Added '/lore update [name]' command.
- [Feature] Added '/lore unsign' command.
- [Improvement] Added chat colors to important values in messages.
- [Improvement] Added logging information when default configuration is created.
- [Improvement] Added feedback to the give command.
- [Improvement] List command now shows books sorted alphabetically.
- [Improvement] Switch to native 'expand' function instead of using apache filter.
- [Improvement] Compile against Bukkit 1.7.2-R0.4 (should still function with previous versions).
- [Improvement] Added more detailed comments to default config.yml.

Known issues
- When cancelling PlayerDropItemEvent (stopping a player dropping the book from their inventory), the player will no longer see a book in their inventory however it is still there. This is a Bukkit quirk.

Signed-off-by: Steven Downer <grinch@outlook.com>